Marta™ – Seamless Cotton Sport Thong (8 Pack)
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Finally, thongs that actually disappear under everything
You put on your favorite dress. You check the mirror. And there they are — panty lines, right through the fabric.
It's the small frustration that ruins great outfits.
Marta are seamless sport thongs with a wide ribbed waistband that lies completely flat against your skin. No lines under leggings. No rolling at the gym. No adjusting all day.
Just 8 pairs of cotton-lined comfort you'll forget you're wearing.
One of our most reordered underwear sets this year
✓ Zero lines under leggings, dresses, or jeans
Seamless edges and bonded hems lie flat against your skin, so nothing shows through — no matter how fitted the outfit.
✓ Stop adjusting your underwear all day
The wide ribbed waistband stays put without digging in. No rolling, no pinching, no tugging it back into place every hour.
✓ Bonded edges that move with you
Laser-cut bonded edges and a seamless stretch-fit design hug your body without digging in. Wide ribbed waistband stays in place — no rolling, no adjusting, just smooth comfort all day.
✓ Sizes S–XL for every body
Designed to fit and flatter all shapes, with inclusive sizing from Small to 3XL. Comfortable stretch that adapts to you — because every body deserves the perfect fit.
What you get today
- Marta seamless cotton sport thong — 8-pack
- Wide ribbed waistband with seamless bonded edges
- Cotton-lined crotch for all-day freshness
- Free tracked shipping
- 60-day money-back guarantee
Seasonal colors sell out quickly — once this batch is gone, specific color assortments may not be restocked.
Get your Marta 8-pack today and stop worrying about what's showing underneath.
Try Marta at home for 60 days. If it doesn't feel comfortable, wear well, or perform as described in daily use, return it for a full refund.
Frequently asked questions
Will these stay invisible under white or light-colored clothing?
The nude and light-toned colors in the colorful pack are designed to minimize visibility under lighter fabrics. For white clothing, we recommend choosing a shade closest to your skin tone.
Can I wear these during intense workouts?
Yes. The cotton-spandex blend stretches and moves with you, and the cotton crotch lining keeps you dry through high-activity sessions.
How should I choose my size if I'm between two sizes?
We recommend going with the larger size. These are made with stretch fabric, so the next size up will still fit snugly without being too tight.
Specifications
- Size: S through XL (see size chart)
- Material: Cotton, Spandex blend
- Crotch lining: 100% cotton
- Pack quantity: 8 pairs
How to wash
- Machine wash cold with similar colors.
- Do not bleach.
- Hang dry or tumble dry low.
Size Chart (Inches)
If you're between two sizes, we recommend choosing the larger one.
| Size | Waist | Hips | Weight (lbs) | Height |
|---|---|---|---|---|
| S | 22 – 23.5 | 31 – 32.5 | 41.5 – 45.5 | 5'3" |
| M | 24 – 25.5 | 33 – 34.5 | 45.5 – 49.5 | 5'5" |
| L | 26 – 27.5 | 35 – 36.5 | 49.5 – 54.0 | 5'7" |
| XL | 28 – 29.5 | 37 – 38.5 | 54.0 – 58.5 | 5'9" |
Do these run true to size? They fit true to size for most. If you're between sizes or prefer a more relaxed fit, we suggest sizing up one.
Can I wear this to the office? Yes. Styled with the right pieces, it reads polished and professional while keeping the silhouette clean.
Will the fabric fade after washing? The fabric is pre-washed to soften the feel and minimize fading. Wash cold and hang dry to keep the color rich.
Wrong size? Displeased? No problem! If for any reason you are not satisfied with the product, we offer a 60 day return policy.
To minimize our carbon footprint, we don't keep all our products in stock. Instead, we make them on demand, which may result in slightly longer delivery times. This approach lets us offer better prices, benefits the environment, and helps avoid unnecessary waste. Once your payment is confirmed, we'll begin processing your order right away — it typically takes 1–3 business days to prepare and ship. After dispatch, you'll receive a confirmation email with a tracking number, and you can follow your order anytime on the Track Your Order page. On average, you'll receive your order within 3–8 working days after dispatch.
