TheBlackPurple
Mass & Slim Compression Leggings
Firm Compression. Sculpted Confidence. Smoother-Looking Legs in 30 Days.
Mass & Slim Compression Leggings combine firm sculpting compression with Tourmaline beads micro-massage technology to shape your silhouette, support circulation, and smooth the appearance of cellulite over time. Fully opaque, squat-proof outerwear leggings, designed to be worn confidently on their own at the gym, on errands, or anywhere you want sculpted, smooth-looking legs.
- Helps smooth the appearance of cellulite
- Supports healthy circulation and lymphatic flow
- Firm compression that sculpts waist to ankle
- Fully opaque, squat-proof outerwear
- Designed for 8 to 12 hour daily wear
- Premium look that feels as powerful as it looks
- Helps support post-workout muscle recovery and reduce leg fatigue
Unlike typical compression leggings that simply squeeze, Mass & Slim works with your body's movement, providing both instant shaping and gradual improvements with consistent wear.
See Mass & Slim Compression Leggings in Action
Tanya is wearing size XL
Customer wearing size Medium
What Does Mass & Slim Mean?
Mass & Slim stands for Massage and overall Slimming. The technology works in two ways:
- Massage: Embedded Tourmaline beads create a gentle micro-massage effect as you move, helping support circulation and lymphatic flow.
- Slimming: Sculpting compression fabric shapes, lifts, and smooths your waist, hips, thighs, and calves for a visibly smoother silhouette.
Together, these two actions help reduce the appearance of cellulite and improve body contouring over time.
Why Women Love Mass & Slim Compression Leggings
Sculpting Compression That Lifts and Shapes
These leggings offer firmer compression than the grey shapewear line, creating a supportive hold that sculpts your waist, hips, thighs, and calves. The result is a smooth, confident silhouette that looks as powerful as it feels.
Active Cellulite Support Technology
Tourmaline micro-massage beads are embedded directly into the fabric. As you walk, move, or exercise, the beads create gentle friction against the skin that helps support:
- Healthy circulation
- Lymphatic flow
- Reduced fluid retention
- Smoother-looking skin over time
Fully Opaque Outerwear Leggings
Unlike traditional shapewear, these leggings are designed to be worn as outerwear. The premium black compression fabric is:
- Completely opaque
- Squat-proof
- Non-transparent
- Gym-ready
They look like high-end fashion leggings while delivering the benefits of anti-cellulite compression technology.
High-Waisted Sculpting Support
The high waistband smooths the midsection and stays securely in place throughout the day. No rolling, no sliding, no constant adjusting. Just a sleek, sculpted silhouette that stays comfortable through workouts, errands, and everyday life.
Breathable Comfort for All-Day Wear
Made with a breathable bamboo-viscose blend, the fabric feels soft and flexible against the skin while maintaining strong compression support. Many customers wear their Mass & Slim Compression Leggings 8 to 12 hours daily.
Clinically Tested. Independently Verified.
In a 30-day third-party clinical study, participants who wore Mass & Slim 8 hours a day experienced:
Results based on a third-party clinical study. Individual results may vary.
How Tourmaline Micro-Massage Technology Works
Hundreds of small Tourmaline beads are woven directly into the fabric. As you move throughout your day, the beads create a gentle, continuous micro-massage against the skin. That subtle stimulation helps support circulation, lymphatic flow, and the appearance of smoother skin over time.
How to Wear Them
- Wear the leggings for 8 hours a day.
- As you move, the Tourmaline beads create a gentle micro-massage.
- Over 30 days, consistent stimulation supports circulation and smoother-looking skin.
Your 30 Day Mass & Slim Plan
Week 1 to 2: Immediate shaping and firm compression support. Legs often feel more supported during activity.
Week 2 to 3: Skin texture may begin to feel smoother. Some women notice reduced puffiness or swelling.
Week 3 to 4: Many customers report visible improvements in the appearance of cellulite and subtle reductions in inches.
Consistency is the key. The women who see the best results wear them regularly.
Made for Women With Demanding Lives
Mass & Slim Compression Leggings have become a quiet favorite for:
- Nurses and healthcare professionals on long shifts
- Women who work long hours on their feet
- Busy moms juggling daily responsibilities
- Women over 45 managing circulation and silhouette concerns
- Women who want cellulite-reducing leggings without changing their lifestyle
- Women managing leg fatigue, swelling, varicose veins, lymphedema concerns, or post-workout recovery
The Mass & Slim Family. Choose What Works for Your Life.
Every Mass & Slim product is powered by the same embedded Tourmaline bead technology, supporting circulation, lymphatic flow, and the appearance of smoother skin. The difference is how you wear them and how firm the compression feels.
Mass & Slim Compression Leggings (Black). Worn ON THEIR OWN.
You're here. Fully opaque, squat-proof outerwear leggings with firmer compression than the grey shapewear. They feel a little more snug at first, then gradually stretch and mold to the shape of your body after a few wears, becoming extremely comfortable and personalized to your fit. Designed to be worn confidently at the gym, running errands, or out for the day.
Mass & Slim Shapewear (Grey). Worn UNDER Your Clothes.
Soft, stretchy, breathable shapewear designed to be worn discreetly under your everyday outfits. More elasticity, more flexibility, and built for 8 to 12 hour wear at work, at home, or out. The grey collection enhances your silhouette by smoothing the stomach, lifting the buttocks, and softening the appearance of cellulite.
- Shapewear Shorts. Shapes waist, hips, and upper thighs. Best under dresses, skirts, and shorter hemlines.
- Shapewear Leggings. Full-length shaping from waist to ankle. Best under pants, jeans, and longer outfits.
- Waist Shaper. Targeted waist and midsection support. Pairs with anything.
Many women own both. Black compression leggings for days they want stronger sculpting on full display, and grey shapewear for invisible layering under everyday clothing.
Fabric and Care
Composition: 53% Polyamide, 33% Polyester, 14% Elastane.
Care: Machine washable and dryer safe. For longest wear, use a gentle cycle in cold water and dry on low heat.
Try Mass & Slim for 60 Days, Completely Risk-Free
Slip them on. Wear them to the gym, on errands, or out for the day. Feel the firm support and sculpted shape right away, and see the difference over 30 days as the fabric molds to your body like a second skin.
If you don't love how they feel, how they fit, or the results you see, return or exchange them within 60 days, no questions asked. Free size exchanges. Free returns.
✓ 60-Day Money-Back Guarantee · ✓ Free Size Exchanges · ✓ Trusted by Women Across the U.S.
Frequently Asked Questions
Size Chart and Fit Guide
One size chart for the entire Mass & Slim collection. Based on standard women's U.S. sizing.
← Swipe to see full chart →
| Size | US Size | Hip | Waist | Height | Weight (approx.) |
|---|---|---|---|---|---|
| Small | 6 / 8 | 36 to 38" | 26 to 28" | 4'11" to 5'6" | 115 to 135 lbs |
| Medium | 10 / 12 | 39 to 41" | 29 to 31" | 5'2" to 5'8" | 135 to 160 lbs |
| Large | 14 / 16 | 42 to 44" | 32 to 34" | 5'4" to 6'0" | 160 to 185 lbs |
| Extra Large | 18 / 20 | 45 to 47" | 35 to 37" | 5'5" to 6'2" | 185 to 215 lbs |
Black Compression Leggings (you're here): These are outerwear with firmer compression. Size up one full size from your usual U.S. size. They will feel snug at first, then stretch and mold to your body shape after a few wears for a personalized, sculpted fit.
Grey Shapewear (Shorts, Leggings, Waist Shaper): Order your true U.S. size. Size up only if you're between two sizes. For example, between Medium and Large, choose Large.
As you wear them, the fabric gradually stretches and molds to the natural shape of your body, becoming more comfortable over time, like a second skin.
Why do the leggings feel snug at first?
This is intentional. The firm compression fabric is designed to feel snug when new. After 3 to 4 wears, the fabric naturally stretches and molds to the shape of your body for a personalized, comfortable fit that feels like a second skin.
What's the difference between the grey shapewear and the black compression leggings?
Both use the same Tourmaline micro-massage technology. The difference is fabric and how you wear them:
- Black Compression Leggings. Firmer compression, fully opaque, designed to be worn on their own as outerwear. They feel a little snug at first, then stretch and mold to the shape of your body after a few wears.
- Grey Shapewear. Softer, more elastic, designed to be worn under clothing for all-day comfort. Smooths the stomach, lifts the buttocks, and softens the appearance of cellulite.
Are they really squat-proof and fully opaque?
Yes. The premium black compression fabric is fully opaque, squat-proof, and non-transparent. They look like high-end fashion leggings while delivering anti-cellulite compression technology. Wear them to the gym, on errands, or out for the day with full confidence.
Can I wear them all day?
Yes. The breathable bamboo-viscose blend keeps you comfortable during extended wear. Many customers wear their Mass & Slim Compression Leggings 8 to 12 hours daily, including during workouts.
How do the Tourmaline beads work?
Tourmaline beads are embedded directly into the fabric. As you walk, move, or exercise, the beads create a gentle micro-massage effect against the skin that helps support healthy circulation, lymphatic flow, reduced fluid retention, and the appearance of smoother skin over time.
How soon will I see results?
The shaping and sculpting effect is immediate. For visible improvements in the appearance of cellulite, we recommend 8 hours a day for 30 days. Most women notice changes within 4 weeks.
What if they don't fit?
We offer 60-day risk-free returns and free size exchanges. If your first pair isn't the right fit, we'll help you find the perfect size.
Are these good for nurses, moms, and women over 45?
Yes. These are some of our most loyal customers. The combination of firm sculpting compression, circulation support, and all-day comfort is exactly what women on their feet all day are looking for.
Ready to Feel the Difference?
Join thousands of women across the U.S. who've made Mass & Slim Compression Leggings part of their everyday routine. Sculpting compression, real circulation support, and a confident silhouette designed to be seen.
60-Day Money-Back Guarantee · Free Size Exchanges · Secure Checkout
Mass & Slim Compression Leggings
Top Quality Store on Google
Estimated delivery between June 08 and June 10.
Firm Compression. Sculpted Confidence. Smoother-Looking Legs in 30 Days.
Mass & Slim Compression Leggings combine firm sculpting compression with Tourmaline beads micro-massage technology to shape your silhouette, support circulation, and smooth the appearance of cellulite over time. Fully opaque, squat-proof outerwear leggings, designed to be worn confidently on their own at the gym, on errands, or anywhere you want sculpted, smooth-looking legs.
- Helps smooth the appearance of cellulite
- Supports healthy circulation and lymphatic flow
- Firm compression that sculpts waist to ankle
- Fully opaque, squat-proof outerwear
- Designed for 8 to 12 hour daily wear
- Premium look that feels as powerful as it looks
- Helps support post-workout muscle recovery and reduce leg fatigue
Unlike typical compression leggings that simply squeeze, Mass & Slim works with your body's movement, providing both instant shaping and gradual improvements with consistent wear.
See Mass & Slim Compression Leggings in Action
Tanya is wearing size XL
Customer wearing size Medium
What Does Mass & Slim Mean?
Mass & Slim stands for Massage and overall Slimming. The technology works in two ways:
- Massage: Embedded Tourmaline beads create a gentle micro-massage effect as you move, helping support circulation and lymphatic flow.
- Slimming: Sculpting compression fabric shapes, lifts, and smooths your waist, hips, thighs, and calves for a visibly smoother silhouette.
Together, these two actions help reduce the appearance of cellulite and improve body contouring over time.
Why Women Love Mass & Slim Compression Leggings
Sculpting Compression That Lifts and Shapes
These leggings offer firmer compression than the grey shapewear line, creating a supportive hold that sculpts your waist, hips, thighs, and calves. The result is a smooth, confident silhouette that looks as powerful as it feels.
Active Cellulite Support Technology
Tourmaline micro-massage beads are embedded directly into the fabric. As you walk, move, or exercise, the beads create gentle friction against the skin that helps support:
- Healthy circulation
- Lymphatic flow
- Reduced fluid retention
- Smoother-looking skin over time
Fully Opaque Outerwear Leggings
Unlike traditional shapewear, these leggings are designed to be worn as outerwear. The premium black compression fabric is:
- Completely opaque
- Squat-proof
- Non-transparent
- Gym-ready
They look like high-end fashion leggings while delivering the benefits of anti-cellulite compression technology.
High-Waisted Sculpting Support
The high waistband smooths the midsection and stays securely in place throughout the day. No rolling, no sliding, no constant adjusting. Just a sleek, sculpted silhouette that stays comfortable through workouts, errands, and everyday life.
Breathable Comfort for All-Day Wear
Made with a breathable bamboo-viscose blend, the fabric feels soft and flexible against the skin while maintaining strong compression support. Many customers wear their Mass & Slim Compression Leggings 8 to 12 hours daily.
Clinically Tested. Independently Verified.
In a 30-day third-party clinical study, participants who wore Mass & Slim 8 hours a day experienced:
Results based on a third-party clinical study. Individual results may vary.
How Tourmaline Micro-Massage Technology Works
Hundreds of small Tourmaline beads are woven directly into the fabric. As you move throughout your day, the beads create a gentle, continuous micro-massage against the skin. That subtle stimulation helps support circulation, lymphatic flow, and the appearance of smoother skin over time.
How to Wear Them
- Wear the leggings for 8 hours a day.
- As you move, the Tourmaline beads create a gentle micro-massage.
- Over 30 days, consistent stimulation supports circulation and smoother-looking skin.
Your 30 Day Mass & Slim Plan
Week 1 to 2: Immediate shaping and firm compression support. Legs often feel more supported during activity.
Week 2 to 3: Skin texture may begin to feel smoother. Some women notice reduced puffiness or swelling.
Week 3 to 4: Many customers report visible improvements in the appearance of cellulite and subtle reductions in inches.
Consistency is the key. The women who see the best results wear them regularly.
Made for Women With Demanding Lives
Mass & Slim Compression Leggings have become a quiet favorite for:
- Nurses and healthcare professionals on long shifts
- Women who work long hours on their feet
- Busy moms juggling daily responsibilities
- Women over 45 managing circulation and silhouette concerns
- Women who want cellulite-reducing leggings without changing their lifestyle
- Women managing leg fatigue, swelling, varicose veins, lymphedema concerns, or post-workout recovery
The Mass & Slim Family. Choose What Works for Your Life.
Every Mass & Slim product is powered by the same embedded Tourmaline bead technology, supporting circulation, lymphatic flow, and the appearance of smoother skin. The difference is how you wear them and how firm the compression feels.
Mass & Slim Compression Leggings (Black). Worn ON THEIR OWN.
You're here. Fully opaque, squat-proof outerwear leggings with firmer compression than the grey shapewear. They feel a little more snug at first, then gradually stretch and mold to the shape of your body after a few wears, becoming extremely comfortable and personalized to your fit. Designed to be worn confidently at the gym, running errands, or out for the day.
Mass & Slim Shapewear (Grey). Worn UNDER Your Clothes.
Soft, stretchy, breathable shapewear designed to be worn discreetly under your everyday outfits. More elasticity, more flexibility, and built for 8 to 12 hour wear at work, at home, or out. The grey collection enhances your silhouette by smoothing the stomach, lifting the buttocks, and softening the appearance of cellulite.
- Shapewear Shorts. Shapes waist, hips, and upper thighs. Best under dresses, skirts, and shorter hemlines.
- Shapewear Leggings. Full-length shaping from waist to ankle. Best under pants, jeans, and longer outfits.
- Waist Shaper. Targeted waist and midsection support. Pairs with anything.
Many women own both. Black compression leggings for days they want stronger sculpting on full display, and grey shapewear for invisible layering under everyday clothing.
Fabric and Care
Composition: 53% Polyamide, 33% Polyester, 14% Elastane.
Care: Machine washable and dryer safe. For longest wear, use a gentle cycle in cold water and dry on low heat.
Try Mass & Slim for 60 Days, Completely Risk-Free
Slip them on. Wear them to the gym, on errands, or out for the day. Feel the firm support and sculpted shape right away, and see the difference over 30 days as the fabric molds to your body like a second skin.
If you don't love how they feel, how they fit, or the results you see, return or exchange them within 60 days, no questions asked. Free size exchanges. Free returns.
✓ 60-Day Money-Back Guarantee · ✓ Free Size Exchanges · ✓ Trusted by Women Across the U.S.
Frequently Asked Questions
Size Chart and Fit Guide
One size chart for the entire Mass & Slim collection. Based on standard women's U.S. sizing.
← Swipe to see full chart →
| Size | US Size | Hip | Waist | Height | Weight (approx.) |
|---|---|---|---|---|---|
| Small | 6 / 8 | 36 to 38" | 26 to 28" | 4'11" to 5'6" | 115 to 135 lbs |
| Medium | 10 / 12 | 39 to 41" | 29 to 31" | 5'2" to 5'8" | 135 to 160 lbs |
| Large | 14 / 16 | 42 to 44" | 32 to 34" | 5'4" to 6'0" | 160 to 185 lbs |
| Extra Large | 18 / 20 | 45 to 47" | 35 to 37" | 5'5" to 6'2" | 185 to 215 lbs |
Black Compression Leggings (you're here): These are outerwear with firmer compression. Size up one full size from your usual U.S. size. They will feel snug at first, then stretch and mold to your body shape after a few wears for a personalized, sculpted fit.
Grey Shapewear (Shorts, Leggings, Waist Shaper): Order your true U.S. size. Size up only if you're between two sizes. For example, between Medium and Large, choose Large.
As you wear them, the fabric gradually stretches and molds to the natural shape of your body, becoming more comfortable over time, like a second skin.
Why do the leggings feel snug at first?
This is intentional. The firm compression fabric is designed to feel snug when new. After 3 to 4 wears, the fabric naturally stretches and molds to the shape of your body for a personalized, comfortable fit that feels like a second skin.
What's the difference between the grey shapewear and the black compression leggings?
Both use the same Tourmaline micro-massage technology. The difference is fabric and how you wear them:
- Black Compression Leggings. Firmer compression, fully opaque, designed to be worn on their own as outerwear. They feel a little snug at first, then stretch and mold to the shape of your body after a few wears.
- Grey Shapewear. Softer, more elastic, designed to be worn under clothing for all-day comfort. Smooths the stomach, lifts the buttocks, and softens the appearance of cellulite.
Are they really squat-proof and fully opaque?
Yes. The premium black compression fabric is fully opaque, squat-proof, and non-transparent. They look like high-end fashion leggings while delivering anti-cellulite compression technology. Wear them to the gym, on errands, or out for the day with full confidence.
Can I wear them all day?
Yes. The breathable bamboo-viscose blend keeps you comfortable during extended wear. Many customers wear their Mass & Slim Compression Leggings 8 to 12 hours daily, including during workouts.
How do the Tourmaline beads work?
Tourmaline beads are embedded directly into the fabric. As you walk, move, or exercise, the beads create a gentle micro-massage effect against the skin that helps support healthy circulation, lymphatic flow, reduced fluid retention, and the appearance of smoother skin over time.
How soon will I see results?
The shaping and sculpting effect is immediate. For visible improvements in the appearance of cellulite, we recommend 8 hours a day for 30 days. Most women notice changes within 4 weeks.
What if they don't fit?
We offer 60-day risk-free returns and free size exchanges. If your first pair isn't the right fit, we'll help you find the perfect size.
Are these good for nurses, moms, and women over 45?
Yes. These are some of our most loyal customers. The combination of firm sculpting compression, circulation support, and all-day comfort is exactly what women on their feet all day are looking for.
Ready to Feel the Difference?
Join thousands of women across the U.S. who've made Mass & Slim Compression Leggings part of their everyday routine. Sculpting compression, real circulation support, and a confident silhouette designed to be seen.
60-Day Money-Back Guarantee · Free Size Exchanges · Secure Checkout
Free 60 Day Return Policy!
FAQs
Tourmaline® beads create a massage effect that boosts blood and lymphatic circulation. The improved circulation helps to reduce cellulite and inches over time.
The Gray Mass & Slim Shapewear is designed to wear under clothes—true to U.S. sizing. Size up only if you’re between sizes.
The Black Mass & Slim Compression Leggings are outerwear with firmer compression, so we suggest sizing up one full size. Both lift, shape, and help improve circulation to reduce inches and cellulite over time.
Our products are clinically tested to show visible results within 30 days, with reductions of up to -3.2 cm in the hip area and -2.3 cm in the thighs. For best results, we recommend wearing the garment for 8 hours a day for 30 consecutive days, as per clinical studies.
Whether you're a nurse, new mom, or constantly on the go, Mass & Slim shapewear fits seamlessly into your routine, offering a lifting and shaping effect for a flattering silhouette.
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