Waist Trainer Underwear for Slim Fit & Daily Comfort
Waist Trainer Underwear for Slim Fit & Daily Comfort
Fits sizes:6-8| Waist:29.5-33in, Hips:38.5-42in
Size guid
Size guid
The right size is what makes shapewear work. Too small and it rolls, digs in and feels painful; too big and it won't smooth. Use this guide to find your size for Cups Brazil fajas, bodysuits, shaper panties and waist trainers.
How to measure
- Waist: measure around your natural waist, the narrowest part of your torso, usually just above your belly button. Keep the tape snug but not tight.
- Hips: stand with feet together and measure around the fullest part of your hips and seat.
- Measure over bare skin or thin underwear, and breathe normally.
Size chart
| Size | US pant size | Waist (in) | Hips (in) |
|---|---|---|---|
| S | 2–4 | 26–29 | 35.5–38 |
| M | 6–8 | 29.5–33 | 38.5–42 |
| L | 10–12 | 33.5–36 | 42.5–45 |
| XL | 14–16 | 36.5–38.5 | 45.5–48 |
| 2XL | 18–20 | 39–42 | 48.5–52 |
| 3XL | 22 | 42.5–46 | 52.5–55.5 |
| 4XL | 24 | 46.5–50 | 56–58 |
Some styles run differently, so always check the size chart on the product page too.
Sizing tips
- Between sizes? Choose the larger one. Shapewear should feel snug, never painful.
- Waist and hips in different sizes? For waist trainers, go by your waist. For panties, shorts and bodysuits, go by your hips. For full-body fajas, go by the larger measurement.
- Waist trainers: start on the loosest hook row and build up wear time gradually.
- Post-surgery fajas: follow your surgeon's sizing and compression guidance.
- Fit check: you should be able to breathe deeply, sit for 15 minutes and move freely.
Still unsure? Email support@cupsbrazil.com with your waist and hip measurements and the product you want, and we'll recommend a size. More help in our FAQ and Shapewear Tips & Style Guides.
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Product Description
Product Description
Waist Trainer Underwear – Shape, Support & Comfort
Waist Trainer Underwear is designed to help shape your waist while keeping you comfortable all day. It fits smoothly under clothes and gives gentle compression to create a slimmer, more defined look. Perfect for daily wear, work, or special occasions.
Made from soft, breathable fabric, this underwear feels comfortable on the skin and allows easy movement. The supportive design helps improve posture while offering tummy control without feeling too tight. It stays in place and does not roll down, giving you confidence throughout the day.
Waist Trainer Underwear can be worn under dresses, jeans, or everyday outfits. It is easy to wear, easy to wash, and designed for long-lasting use.
**Key Features:**
* Shapes and supports the waist
* Comfortable for all-day wear
* Breathable and skin-friendly fabric
* Smooth fit under clothing
* Helps with posture and tummy control
Choose Waist Trainer Underwear for a confident, smooth, and comfortable fit every day.
FIT & FABRIC
FIT & FABRIC
• 58% Nylon+42% Spandex
• Hand wash
• Do not dry clean
• Do not iron
• Do not bleach
• Do not tumble dry
Care instructions
Care instructions
Wash max 30°, do not bleach, do not tumble dry, iron at low temperature, dry clean.
Shipping & Returns
Shipping & Returns
SHIPPING POLICY• Free Shipping on Orders $80+ (US Only)
• Please allow 2-4 business days for standard processing before your order ships.
RETURN POLICY• We accept exchanges & returns within 30 days of receiving.Free gifts, mystery box, bras & underwear and items marked final saleare not eligible for return.
• Products must be returned unworn, unwashed, in their original condition and with all tags and liners attached.
• We ask that you wear underwear when first trying-on your purchase, as we reserve the right to refuse returns that show any signs of wear.
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PRODUCT FEATURES
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Love how supportive it feels while still being breathable and soft.
Gives me a snatched look without squeezing or rolling down.
It makes my outfits look better instantly and feels breathable.
This shapewear fits perfectly and smooths everything without feeling tight.
The fit is super flattering and stays in place all day.
The material is soft but very sculpting and completely invisible under clothes.
I feel more confident every time I wear this under my clothes.
The fit is super flattering and stays in place all day.
Supportive, flattering, and surprisingly comfortable for long wear.
This shapewear smooths everything out instantly and feels comfortable enough to wear all day.
I feel more confident every time I wear this under my clothes.
Creates a smooth silhouette under my dresses with no lines showing.
Supportive, flattering, and surprisingly comfortable for long wear.
Supportive, flattering, and surprisingly comfortable for long wear.
Supportive, flattering, and surprisingly comfortable for long wear.
Love how supportive it feels while still being breathable and soft.
I wore this all day and it stayed comfortable while giving great support.
Supportive, flattering, and surprisingly comfortable for long wear.
It makes my outfits look better instantly and feels breathable.
I wore this all day and it stayed comfortable while giving great support.
Gives me a snatched look without squeezing or rolling down.
Supportive, flattering, and surprisingly comfortable for long wear.
This shapewear fits perfectly and smooths everything without feeling tight.
It makes my outfits look better instantly and feels breathable.
Gives me a snatched look without squeezing or rolling down.
IN THE PRESS
