GUAM Slim Night Anti-Cellulite Leggings
GUAM Slim Night Anti-Cellulite Leggings (Fibramar® Leggings Slim Notte) are cosmeto-textile leggings made to work while you rest. Designed for night-time wear, they help skin look smoother, firmer and more toned by combining Guam® marine algae with bioactive minerals, working with the skin's overnight rhythm.
Soft and non-restrictive, they are made for sleeping and lounging at home. Fibramar® technology releases microencapsulated Guam® seaweed gradually onto the skin, while bioactive minerals return your body heat as Far Infrared Rays (FIR) to support microcirculation. The leggings do not heat up on their own.
In a placebo-controlled test by the University of Milan-Bicocca (40 women, 6 hours a day for 30 days), thigh circumference was reduced by 1.44 cm on average and up to 2.5 cm. This is not weight loss.
Registered as an anti-cellulite cosmetic with the EU CPNP (Cosmetic Product Notification Portal). OEKO-TEX Standard 100 Class I. Made in Italy.
How It Works:
- Fibramar® Technology combines advanced yarn engineering with microencapsulated Guam seaweed and bioactive minerals.
- Seaweed Microcapsules in the fabric release Guam seaweed extract onto the skin with your movement, helping skin look smoother and firmer.
- Far Infrared (FIR) from the minerals supports skin microcirculation and the release of excess water retention.
Wear over underwear, 6 hours a day for 30 nights. Do not wear during pregnancy; suitable after pregnancy and while breastfeeding. Wash at max 40°C without fabric softener; do not spin, tumble dry or iron.
CHECK BEFORE ORDER! Sizes are smaller than USA sizes:
- XS \ S, Waistline: 23.8 - 25.1 (in), Hip: 34.8 - 35.4 (in)
- M, Waistline: 27 - 31.5 (in), Hip: 37.1 - 41.7 (in)
- L \ XL, Waistline: 33 - 37.7 (in), Hip: 43.3 - 48 (in)
- 2XL: choose if you are above L \ XL
Due to the intimate nature of our products, all sales are final. Please be sure to consult the size chart (available on all product pages for convenience) before purchasing to ensure that your item will fit correctly.
Night-time anti-cellulite leggings
Smoother thighs, a firmer feel and lighter legs, while you sleep
You train, you eat clean, and the dimples on your thighs still don't move. Slim Night works in the hours you already spend resting: 6 hours a night, 30 nights, no wraps, no mess.
- Smoother-looking skin as tiny seaweed capsules in the fabric release Guam seaweed onto the skin all night.
- Firmer, more toned thighs, up to 2.5 cm less thigh circumference in a university test.
- Lighter legs in the morning: soft, non-restrictive fit made for sleeping and lounging.
How to wear night anti-cellulite leggings
- 1
Before bed, over your underwear. Gently stretch the fabric the first time.
- 2
6 hours of sleep or lounging. They shape to you after a few nights.
- 3
30 nights in a row. Measure your thighs on night 1 and night 30.
- 4
Wash gently: max 40°C (104°F), no softener, spin, dryer or iron.
How it works
How anti-cellulite leggings work overnight
At night your skin is more receptive. Slim Night is a cosmetic you wear: the fabric itself carries the treatment, so it works while you sleep.
Seaweed microcapsules
Fibramar microfibre holds Guam seaweed (brown kelp) in tiny capsules that release gradually onto your skin with every movement.
Far infrared (FIR)
Bioactive minerals in the yarn take in your body heat and give it back as far infrared energy, supporting microcirculation. No heating element, ever.
Soft night shaping
A non-restrictive fit that follows hips, buttocks and thighs, comfortable enough to sleep in all night.
Clinical-instrumental test, University of Milan-Bicocca: 6 hours a day for 30 days. Thigh reduction is not weight loss. Results vary.
Skin longevity after GLP-1 weight loss and in perimenopause
When weight comes off fast, or hormones shift, thighs often lose firmness. Slim Night adds a nightly firming step without extra time in your day.
What's in the fabric
Fibramar seaweed fabric
Brown kelp from the Atlantic is GUAM's signature seaweed, used in our wraps since 1986. Here it sits in microcapsules inside the yarn. OEKO-TEX Standard 100, Class I (the strictest class), vegan, made in Italy.
Not for pregnancy. Fine after birth and while breastfeeding. Pregnant? Try Inthenso Mom.
Size guide
Find your size
Italian sizing runs smaller than US. Between two sizes, choose the smaller one.
| Size | Waist (in) | Hip (in) |
|---|---|---|
| XS-S (0-4) | 23.8-25.1 | 34.8-35.4 |
| M (6-10) | 27-31.5 | 37.1-41.7 |
| L-XL (12-18) | 33-37.7 | 43.3-48 |
| 2XL | Choose 2XL if you are above L-XL | |
Important: Due to the intimate nature of the product, all sales are final. Please check the size chart before you order.
Questions
Night leggings for cellulite: your questions
Do anti-cellulite leggings really work?
In a University of Milan-Bicocca test, 40 women wore them 6 hours a day for 30 days and lost up to 2.5 cm of thigh circumference (1.44 cm on average) vs placebo. Results vary.
Will they make me hot at night?
No. They have no heating element. Minerals in the yarn return your own body heat as gentle far infrared energy, so they feel like normal soft leggings.
How tight are they? Can I sleep in them?
They are soft and non-restrictive, made to sleep and lounge in. They feel snug the first night and adapt to your shape after a few wears.
How long until I see results?
The test measured after 30 nights of 6+ hours. Many women notice smoother-feeling legs sooner. Measure your thighs on night 1 and night 30.
Can I wear them while pregnant or breastfeeding?
Not during pregnancy. They are fine after birth and while breastfeeding. For pregnancy, our Inthenso Mom line is made to be pregnancy-safe.
Do they help with loose skin after GLP-1 weight loss or in perimenopause?
They add a firming, toning step for thighs while you sleep. Pair with a firming cream by day for skin that has lost tone.
How do I wash them? Does the seaweed wash out?
Hand or machine wash at max 40°C, inside out, no softener, no spin, no dryer, no iron. Gentle washing protects the capsules and the stretch.
Night leggings or Power Fit for daytime?
Slim Night is for sleep and lounging. Power Fit is for workouts and daywear. Many women use both for round-the-clock care.
What size should I order?
Italian sizes run small. Check the waist and hip chart and, if you are between sizes, choose the smaller one. Sales are final.
Free US shipping over $150.
Round-the-clock routine
