Free Tax. Free Delivery

60 Days Return

Free Size Exchanges

3-5 days Delivery

Free Tax. Free Delivery

60 Days Return

Free Size Exchanges

3-5 days Delivery

Free Tax. Free Delivery

60 Days Return

Free Size Exchanges

3-5 days Delivery

Woman wearing high-waisted shapewear and necklace applying makeup in bathroom mirror

How It Works: Tourmaline® Micro-Massage Technology

Mass & Slim stands for Massage & Slimming.

Hundreds of Tourmaline® ceramic beads are embedded directly into the fabric. As you move, they create a gentle micro-massage that helps boost circulation and lymphatic flow—reducing the appearance of cellulite and inches over time.

Wear it discreetly under your clothes as shapewear or on its own as compression leggings.

No discomfort. No bulky compression. Just wear it daily.

Find Your Perfect Fit

Shorts for under dresses & skirts. Leggings for under pants & scrubs. Compression Leggings to wear as your outfit. All feature the same clinically tested Tourmaline® technology.

Mass & Slim anti-cellulite shapewear shorts for women smoothing waist and thighs with micro-massage fabric
Mass & Slim shapewear shorts worn under clothing for invisible smoothing and all-day comfort

Mass & Slim Shapewear Shorts

(167)

$99.95 $87.95
Mass & Slim Shapewear Leggings - TheBlackPurple
Mass & Slim Shapewear Leggings - TheBlackPurple

Mass & Slim Shapewear Leggings

(91)

$109.95 $97.95
Woman modeling black high-waisted compression leggings with subtle textured pattern.
High-waisted black compression leggings with textured fabric shown from the back

Mass & Slim Compression Leggings

(15)

$139.95 $109.95
Mass & Slim Shapewear Shorts (3-Pack) - TheBlackPurple

Why Thousands of Women Choose Mass & Slim

Clinically Proven Results
Up to -3.2 cm around the hips and -2.3 cm around the thighs in a 30-day independent trial.

No diet changes. No exercise. Just daily wear.

Boosts Circulation as You Move
Tourmaline® micro-massage beads support circulation and lymphatic flow. Women with lymphedema, restless legs, and varicose veins often say their legs feel lighter and more comfortable.

Comfort You Can Wear All Day
Soft bamboo-viscose fabric with no rolling or pinching. Comfortable under scrubs, office clothes, dresses, or even for sleep. Many customers wear them 8–12 hours daily.

Instant Smoothing + Gradual Cellulite Reduction
Look smoother instantly — while daily wear visibly reduces cellulite and inches.

Save More. See More Results. Save $64 When You Bundle

Three pairs of high-waisted gray shapewear leggings, 3 pack, on female models
Mass & Slim Shapewear Leggings (3-Pack)

Mass & Slim Shapewear Leggings (3-Pack)

$293.85 $229.85
Three women wearing high-waisted, seamless shaping shorts, 3 pack multipack
Mass & Slim Shapewear Shorts (3-Pack)

Mass & Slim Shapewear Shorts (3-Pack)

$263.85 $199.85
Women modeling high-waisted grey shapewear leggings and shorts, 3 pack set
Mass & Slim Anti-Cellulite Shapewear Pack

Mass & Slim Anti-Cellulite Shapewear Pack

$263.85 $199.85

Shop now
Diverse group of women smiling together in front of a brick wall, featured in purple overlay

Clinically Tested

In an independent 30-day trial, 30 women aged 18–55 experienced measurable reductions and improvement of skin elasticity. No diet changes. No exercise changes. Just consistent daily wear.

Which One Is Right for You?

  • Mass & Slim Shapewear Shorts

    $87.95

  • Mass & Slim Shapewear Leggings

    $97.95

  • Mass & Slim Compression Leggings

    $109.95

  • Mass & Slim Waist Shaper

    $77.95

Mass & Slim anti-cellulite shapewear shorts for women smoothing waist and thighs with micro-massage fabric
Mass & Slim Shapewear Leggings - TheBlackPurple
Woman modeling black high-waisted compression leggings with subtle textured pattern.
Woman wearing high-waisted seamless shapewear under black bra and white shirt