NEW DROP

6 Pack Tencel™ Invisible Underwear

Name: 6 Pack Tencel™ Invisible Underwear
Brand: STRINGYS
SKU: 190410SSXXS6
Price: 99.0 USD
Availability: InStock
Rating: 4.8 (237 reviews)

Size

Color

Size

Color

Free shipping on all orders over $75 in the US

Made with TENCEL™ Lyocell -soft & breathable

Details

So good you need 6.

Meet our sporty side.
Crafted from our custom-developed TENCEL™ fabric, with an ultra-soft feel and a flattering new silhouette designed to look as good as it feels.
Versatile, and effortlessly refined, sporty transitions seamlessly from movement to the everyday.

Zero seams and raw-cut edges keep them invisible even under your most fitted leggings.

Materials & Care

For best results: Machine wash cool with like colors — in your mesh bag if you’ve got one — and lay flat or hang to dry. TENCEL™ dries fast, so skip the dryer.

TENCEL™ Lyocell is a plant-based fiber spun from sustainably sourced eucalyptus. Soft, stretchy, breathable and lightweight, it wicks moisture and stays smooth on skin wash after wash.

Our magic straps are made from an advanced material that is durable, recyclable and biodegradable in 3–5 years. The composition is 100% latex-free and has a soft soothing feel on the skin.

Shipping & Returns

Free shipping on all U.S. orders $75+

New drop alert: Sporty just dropped and the warehouse is doing cardio. Please allow 7–10 business days for us to pack your order with care and get them out ASAP.

Stringys pieces are intimate (and meant to stay that way), so we cannot accept returns.

Questions or feedback? We’re here for you!

Reach out anytime at hey@stringys.com

New drop Made with TENCEL™

New shape. New material. Still invisible.

Disappears under Leggings. Meet your leggings. New best friend.

Fabric TENCEL™ Lyocell Spun from eucalyptus. High performance. Skin friendly. Moisture wicking.

Breathability High Lightweight TENCEL™ keeps air moving, so you stay cool and dry mid-workout.

Coverage + More More coverage than the original, so you’re covered in every position.

Occasion PilatesGymRunningHot yogaErrandsCouch

#SPORTYSTRINGYS

Move however you move

The stay-put test

One full session.
Zero adjustments.

0adjustments

0reps & counting

We wore Sporty Stringys through bridges, squats, burpees and the walk home — and counted every tug, pull, or reposition.

Glute bridges3 × 15
0✓
Goblet squats4 × 12
0✓
Stairmaster5 min
0✓
Burpees20
0✓
Walk home1.5 mi
0✓

SPOT THE DIFFERENCE.

Left: your “seamless” pair. Right: Sporty by Stringys. Same leggings, same light, same squat-ready fit — and nothing showing through.

FROM SHARK TANK TO YOUR TOP DRAWER

What started as an idea for underwear you can't see turned into a nationwide obsession. Featured on Shark Tank and worn by women everywhere — Stringys is the new standard for invisible comfort.

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Overall rating: 4.8312235 / 5 from 237 reviews.

AI Generated Review Summary

The 6 Pack Tencel™ Invisible Underwear features a flattering silhouette and an ultra-soft feel. The fit is praised for being perfect, while the fabric is lightweight and non-seamless. However, some users report issues with coverage and visible panty lines.

Summary topics

Fit (6%): Customers keep praising the perfect fit of the product, with multiple reviewers mentioning that it fits perfectly.
Seamless Underwear (9%): Customers appreciated the seamless undies, with many considering them the best they've ever worn.
Appearance (3%): Customers loved the look of the underwear, describing it as perfect and exactly what they were looking for.
Size Fit (6%): Customers have mixed opinions about the size, with some recommending to size up to a medium.
Panty Lines (16%): The feedback is varied, with some users reporting no panty lines and others finding them to be visible.

Review topics: [].

Review highlights

"Truly panty line free, fit perfectly, no riding up on you or rolling down while you’re out and about!" — Cady
"Very good g string My wife looks very attractive :heart_eyes_cat::heart_eyes_cat:" — Navarrete
"They’re the perfect fit, and as advertised, no panty line." — Chris L.

Reviews

Perfect for Carnival costume

"This was the perfect underwear to wear under my costume..I hate thongs but this is unbelievably comfortable like u don’t feel it at alllllll.. it’s amazing and a must have !!"

— Sasha M. (5/5)

Underwear are great; the seamlessness

"Underwear are great; the seamlessness is ideal for tighter clothing & formal wear"

— Andrew P. (5/5)

sizing is off and not-returnable, think twice

"I went with my usual sizing (I wear a size 4-6/S) and also purchased a medium as an alternative size just in case. They were both so small that I could barely put them on. It was for a wedding, and there was no way to wear these without seeing major lines. They have zero returns, so I'd think twice about purchasing these, and I definitely won't be a customer. It's just another PE company that isn't making a good product."

— Claire (1/5)

Life changing

"These thongs are magic. I wore them with crotchet pants that have tons of holes everywhere at a music festival (they are supposed to be a swimsuit cover up) and people were asking if I was wearing underwear because they couldn’t tell. Magical!"

— Sierra S. (5/5)

Love these!

"I love these! I live in Houston where is crazy for in the summer I'm in my 40s and teach Barre and yoga and workout. These are perfect for the hot weather to wear under workout clothes but also under cute outfits where I don't want lines to show. They are very comfortable"

— Ruben A. (5/5)

Nude Underwear

"Super cute & comfy! Love the nude color aswell very close to my skin tone"

— Jaquoya C. (5/5)

too expensive, very poor delivery

"the package is like you are getting something for $5 from amazon. it is really disappoinitng when this costs so much."

— Alice M. (1/5)

Truly Invisible…literally forget they are on

"In all honesty, I hate underwear (the lines, the feeling etc)…don’t even wear them usually! Gave these a shot and yep…so comfortable and invisible you forget you have them on (and sadly have peed in them…twice). If Stringy’s is reading and wants to send me two new pairs, that would be great (I promise I’ll get it right next time). I seriously love them!!!"

— Heather L. (5/5)

Bought size S

"When I opened I saw immediately too small the size S 🙁 so definitely need sizing up ../ And they are not accepting exchange ."

— Bogi T. (3/5)

OMG

"I have a few beautiful crocheted outfits that have been sitting in my closet because I could never figure out the right undergarments to wear underneath them. These completely solve the problem! They are super comfortable and truly invisible under my outfits. I can finally wear pieces I've been avoiding for so long. Such a great find – I absolutely love them!"

— Holly W. (5/5)

Stringys