Perfect under leggings
Finally found a thong that stays invisible during training. No lines, no distractions, just confidence.
Sophie M.
Verified
“Finally found the perfect thong for my activewear. Invisible under my light-coloured leggings, incredibly soft, and gives me the confidence to move without worrying about lines or discomfort. It doesn't give Camel toes.”
No camel toe
No visible lines
Bamboo gusset
OEKO-TEX® certified
Draft preview (Black Friday): the cart only charges these prices once your Kaching deal is set to 4 = £67.99, 7 = £105.99, 10 = £140.00.
Colour: Black
Size: S
Our Black Friday saleOur best offer of the yearFree gifts with every pack, while stocks last
Your free gifts3 gifts unlocked · next: the purse
UK delivery
4 of 4 chosen
30-Day GuaranteeLove your first pair or your money back
Buy Now, Pay Laterwith Klarna & Clearpay
30 DAYS
First Pair Guarantee
Train in them for 30 days. If you don’t love your first pair, we’ll refund it in full. No need to send it back.
✓ Risk-free for 30 days✓ Full refund on your first pair
One per customer · claim within 30 days of delivery
Verified
“Finally found the perfect thong for my activewear. Invisible under my light-coloured leggings, incredibly soft, and gives me the confidence to move without worrying about lines or discomfort. It doesn't give Camel toes.”
Before & after
NO CAMEL TOE, BY DESIGN
A wider, bonded bamboo viscose gusset sits flat across the front, so there's no camel toe and no lines under your leggings. Put it on and forget it's there.
Engineered to disappear. Designed to sit flat and stay invisible. Just thoughtful design that works.
After
Before
Real Women. Real Movement.
Pilates, yoga, the gym, the school run, long days in leggings, real women putting SHAPSS to the test through every part of their active day. Moisture-wicking, all-day comfort, and the confidence that comes with no camel toe, no lines, no second-guessing.
How it's made
Built Properly, Where It Matters
The part closest to your skin is the part we paid the most attention to. Every layer of SHAPSS is designed for comfort, movement, and a smooth invisible fit.
Best for
Pilates, yoga, gym sessions, everyday leggings, white trousers, fitted dresses, and everything in between. All-day comfort with a barely-there feel.
Fit + coverage
A secure, comfortable fit. The wider bonded gusset sits flat across the front for a smooth finish, while the seamless design keeps everything invisible.
Materials
Gusset: 95% bamboo viscose, 5% spandex. Body: 75% nylon, 25% spandex. Bamboo gusset fabric made with OEKO-TEX Standard 100, Class I certified materials.
Care
Machine wash cool (30°C). Do not use fabric softener or bleach. Air dry for best results.
Exterior view
Interior view
Gusset layers
Smooth, Comfortable, Built To Last
Confidence under anything
No camel toe, no visible line. Wear the white, the leggings, the fitted dress.
Comfort That Moves With You
A soft bamboo gusset designed to sit smoothly against your skin. So comfortable, you’ll forget it’s there.
Breathable Moisture Control
The bamboo viscose gusset helps manage moisture, keeping you feeling fresh, comfortable, and ready for the day.
Gentle On Sensitive Skin
Soft, breathable bamboo fabric designed to feel kind on skin — even during long days.
Made To Last
Bonded edges and six reinforced bar tacks help maintain shape and durability through everyday wear and washing.
Loved By Women Who Move
From gym sessions to everyday confidence, discover why SHAPSS feels different.
DISCOVER SHAPSSFeels like I’m wearing nothing
I wear these for workouts and everyday life. No digging, no adjusting, just smooth comfort all day.
Emma R.My new gym essential
From strength sessions to long days out, SHAPSS stays comfortable and in place.
Charlotte W.No more adjusting during workouts
I can squat, stretch, and move without worrying about my underwear. Exactly what I needed.
Amelia T.The softest active thong
The bamboo fabric feels amazing on my skin. Lightweight, breathable, and seriously comfortable.
Olivia P.Three Steps To All-Day Comfort
No complicated routines. No adjustments. Just underwear designed to move with you.
01
Slide It On
Wear SHAPSS under leggings, white trousers, fitted dresses, or your everyday outfits. The bonded gusset sits smooth from the moment you put it on.
02
Move Through Your Day
From workouts to workdays and everything in between. No visible lines, no bunching, no constant adjusting. SHAPSS stays comfortable and secure.
03
Forget It’s There
Comfort that lasts from your first coffee to your last stop of the day. No checking. No fixing. No distractions.
Anti camel toe
Smooth, zero bulk
Worried it will feel bulky? It won't. Just soft, light padding built into a wider bonded bamboo viscose gusset, smoothing the front so it sits flat and comfortable against your body, without the bulk. Nothing to adjust. Just a smoother fit with more confidence.
Invisible under leggings
Seamless silhouette
The difference
We fixed what every other thong got wrong.
Three complaints we heard on repeat, and our answer to each.
"It gave me camel toe"
Most solutions use thick padding you can feel. SHAPSS uses a soft, light padded bamboo viscose front built into the garment to sit flat and smooth. No bulk. No bunching. Just a cleaner, more comfortable fit.
"It felt like scratchy plastic"
Many thongs use fabrics that don’t breathe. SHAPSS uses a soft, breathable 95% bamboo viscose gusset designed for comfort against your skin. Made with OEKO-TEX Standard 100, Class I certified fabric.
“Is it worth the price?”
Cheap underwear often means replacing it again and again. SHAPSS is built with bonded edges and six reinforced bar tacks to keep its shape wash after wash. Better comfort. Better durability. Better value over time.
-
No camel toeA wider bonded front, no lines
-
Stays put when you moveNo rolling, no riding up
-
Soft bamboo viscose gussetBreathable, kind to skin
-
OEKO-TEX® Class I certified fabricTested to the strictest standard
-
UK brandDesigned and shipped from the UK
SHAPSS ACTIVE THONG
ordinary thongs
Made for activewear
Yes
Designed for leggings, the gym, pilates and everyday movement
No
Made to look good, not to move with you
All-day confidence
Yes
All-day confidence, nothing to check or adjust
No
Constant anxiety, checking and adjusting
No camel toe
Yes
Soft, wider gusset front that sits flat and smooth
No
Standard cuts that shift and bunch
Invisible under leggings
Yes
Bonded seamless edges, no visible lines
No
Visible seams and lines under activewear
Stays put when you move
Yes
Secure through every squat and stretch
No
Rolls, rides up, needs adjusting
Soft, breathable, kind to skin
Yes
95% bamboo viscose gusset, OEKO-TEX Class I
No
Basic fabrics that trap heat
Holds its shape
Yes
Keeps its shape wash after wash
No
Stretches out and loses structure
UK brand
Yes
Designed and shipped from the UK
No
Unclear manufacturing standards
30-Day Comfort Guarantee
Wear them, wash them, put them through real life. If your first pair isn't right, email us and we'll refund it. No need to post worn underwear back.
OEKO-TEX® Class I Certified Fabric
Made with independently tested Class I certified fabric soft, breathable, and gentle on skin.
Free UK Shipping Over £60
Fast, discreet delivery in plain packaging. Most orders arrive within 2–4 business days.
Built To Hold Its Shape
Bonded edges and six reinforced bar tacks help SHAPSS stay smooth, secure and comfortable, wash after wash.
Our promise
Try Them For 30 Days
Wear them, wash them, and put them through real life. If your first pair isn't right, we'll refund it. No need to send worn underwear back.
Any last questions?
What size should I get?
For the best fit, measure your natural waist and hips and match them to our size chart (you'll find it on this page, in both cm and inches). If you fall between two sizes, we'd recommend sizing up for extra comfort. And if it's not quite right when it arrives, don't worry — we offer easy 30-day exchanges, so you can get the perfect fit stress-free.
Does it actually stop camel toe?
Yes, that's exactly what it's designed for. Most thongs have a thin, narrow gusset that presses into you and shows through leggings. SHAPSS uses a wider, flatter bonded gusset that sits smoothly across the front, so there's nothing to dig in or show. Paired with seamless edges, it means no camel toe and no visible lines, even under tight or light-coloured leggings. It's the whole reason we made it.
Will it show under leggings or white trousers?
No. Bonded seamless edges are designed to disappear under leggings, light colours, and fitted outfits with a smooth, invisible finish.
What's it made of?
Body: 75% polyamide, 25% elastane
Gusset: 95% bamboo viscose, 5% spandex
The bamboo gusset fabric is made with OEKO-TEX® Standard 100, Class I certified materials.
Is it okay for sensitive skin?
The bamboo viscose gusset is hypoallergenic and breathable, and the fabric meets the Class I standard used for babywear.
How do I care for it?
Our wash test adopts standard home wash cycle: cold water, mild detergent, no tumble drying, Air dry ONLY .No fabric softener or bleach.
What's your returns policy?
30-Day Comfort Guarantee
Wear them, wash them, put them through real life. If your first pair isn't right within 30 days of delivery, email support@shapss.com with your order number and we'll refund that pair. One pair per customer. No need to post worn underwear back.
Because we sell intimate apparel, the following terms keep things hygienic and fair.
Eligibility for Returns
- Returns must be requested within 14 days of receiving your order.
- For hygiene reasons, items can only be returned if the hygiene seal is still intact and unopened. Any item with a removed, broken, or tampered seal cannot be returned or exchanged, as it can no longer be resold.
- Items must be unworn, unwashed, and in their original packaging.
- Items showing any stains, marks, or signs of wear or use will not be accepted for a standard return or exchange. Any refund or exchange in such cases is entirely at our discretion.
- This does not affect your rights if an item is faulty.
-For change-of-mind returns and exchanges, customers cover return postage (we recommend a tracked service). For faulty or incorrect items, we cover it.
Where do you ship, and how much?
We ship across the UK in discreet packaging. Enjoy free shipping on orders over £60, with most orders arriving within 2–4 business days.
L
They sit so well & are very comfy to work out in!
No camel toe aswell which is a double bonus!!
S
I love this underwear so much as a gym girl ! Especially the shorts , leggings and flares I wear are really tight and I was always getting that seams . No I can comfortably enjoy my lovely sets without worrying about seams 🩷 I would highly recommend this to any gym/pilates/yoga girlies
M
So comfortable and seamless 100% recommend
R
Absolutely obsessed!
Honestly, this is one of the best active thongs I’ve tried. The material is so soft and comfortable, and the fit is amazing. The wider gusset makes such a difference and, most importantly, it genuinely helps avoid camel toe — especially when wearing tight gym leggings!
It stays comfortable throughout workouts and doesn’t dig in or feel uncomfortable like a lot of other thongs can. I love that it gives you that seamless look while still being practical for being active. Once you’ve worn one, it’s hard to go back to normal underwear! Definitely recommend. 🤍
R
Exactly what I’ve been looking for since I started the gym . It literally hides everything and is so comfortable
E
I have been absolutely loving Shapps thong! It is so comfortable, seamless, breathable and it just stays put. I would purchase over and over again! Amazing quality, and I now could not live without it!!!
V
Absolutely love these! So comfortable and breathable which is exactly what i want! I 100% recommend these.
B
Being completely honest… I absolutely love these! They’re super comfy and NO VPLs! I’m extremely active in my jobs and fitness so having underwear I can rely on is so important for me and these hit that down to a T! Would recommend to anyone looking for comfort and durability - you won’t regret it!
K
Found my new favourite active wear pants!!
Don’t move out of position and make me feel uncomfortable. Nothing worse than having to readjust yourself when working out, and in CrossFit there is a lot of moving around!
L
Unbelievably seamless and super comfy to wear when training in the gym. Not visible under leggings, I have the black pair and they do not show under light colours shorts/leggings
A
I put these to the ultimate test in a CrossFit class!
Box jumps, snatches and plenty of movement, and they didn’t budge!
Not only did they stay perfectly in place, but they were so comfortable I completely forgot I was wearing them!
No adjusting, no distractions and, best of all, no camel toe!
An absolute game changer for us ladies who love our leggings! Highly recommend!
J
I’ve been looking for replacement training thongs for a while. Quo Active were my go to. These are no longer available in the UK and frankly don’t withstand washing as the component parts eventually disintegrate so no longer felt like value for money. They are also one size.
Thanks to the algorithm, Shapss popped up on my feed. I initially dismissed them as all the models were significantly younger than me. I am a midlifer: a fit and active woman lifting in the gym and don’t mind paying for a premium product. The more I looked at Shapps, the more interested I was. The construction looked great. I ordered some. These are a terrific premium product. Really comfortable and well made. They wash beautifully. Super comfy for weight training and HIIT. No VPL, no pulling, no bagginess, no camel toe and no digging in. I feel secure.
Many congratulations to the founders! It’s fab to support a new UK business too.
Now for some feedback which I hope is helpful!
Please get some midlife models. Your grid does not resonate with me and it’s not diversified. Please cut down and simplify the packaging! It doesn’t need a box within a box with tissue. That must also really be a cost for you too. It can still be luxe high end experience with less packaging. “Nude” obviously doesn’t cover all skin tones and it’s hard for a new business to cover all bases but that tone is too peachy and yellow for me but useful for light coloured leggings.
Tweaks and you are on to a winner. Presumably great for all active women whatever the sport.
I’ve already made a repeat purchases in black and recycled my old tatty pairs!
I bought xs and am an hourglass petite UK6/8 and found the fit true to size.
Good luck! I’ve already recommended you to friends.
Thank you so much, this genuinely made our week. Becoming your Quo Active
replacement, and hearing 'no VPL, no camel toe, I feel secure' from a fellow
gym-goer, means everything to us. Your feedback is spot on too, more midlife
models, more inclusive shades, and simpler packaging are all things we're
already working on. Thank you for the repeat purchase, for supporting a new
UK brand, and for recommending us. We're so grateful. 🤍
M
Found them small, so not true to size! Also not very comfortable!
Hi Marilyn,
Thank you for your honest feedback, and I'm genuinely sorry these didn't
feel right for you, both the fit and the comfort. That's really not the
experience we want anyone to have.
Sizing can feel different from person to person, so I'd love the chance to
help you find a better fit. Please drop us a message we'll do everything we can to make it right for you.
We take every bit of feedback to heart, it's how we keep improving.
Warm wishes,
Fay
SHAPSS
F
The best seamless pant. I love it super smooth, best underwear for gym shorts and everyday wear.
M
The best underwear I’ve ever worn- no joke, for the gym these are such a game changer!! I highly recommend 🤍🤍
K
Honestly the COMFIEST pants ever !!! No thing line in gym wear yes please xx
L
Absolutely amazing so comfy and flattering will definitely be purchasing more ! They also have a great and fun website and lots of great offers, all round amazing brand and would recommend to everyone.
I
The perfect thong for working out! No lines and stays put the whole workout.
M
I have the black pair and they really are my go to underwear. So comfy. As a gym girl you can wear any leggings without worrying about the panty line or camel toe. I really recommend. Worth the money 100%.
N
so impressed with this thing!!! It’s super comfortable to wear and does exactly what it’s supposed to without feeling restrictive or awkward. The design does a great job of preventing camel toes, which makes such a difference when you’re wearing tight leggings or doing workouts where you’re moving around !
The material feels soft, stretchy and supportive, and it stays comfortable even after wearing it for a few hours. I also really like that it doesn’t feel overly bulky or noticeable underneath your clothes. 100% recommend 🤍
A
These non camel toe thongs have literally saved me!! If you’re a gym girlie these are a NEED. I feel super confident in them and I do not worry if anyone can see my underwear through my active wear. They are super soft, super comfortable and I wear them every time I go to the gym! I couldn’t imagine going back to normal underwear. THESE ARE A GAME CHANGER.
A
Love love love this underwear, does exactly what it says. No lines, completely seamless, no camel toe. The material is a buttery fabric and feels so comfortable on the skin. Highly recommend!
A
finally found some active undies that actually do as they say!! So worth it🩷
H
So so comfy! Honestly the best panties I’ve worn! Literally no camel too and makes my glutes look so good too!
M
I’ve finally found some pants that I can wear on a leg day that I forget about, because they are that comfy! It’s also the first pair of pants that do not give me a camel toe which is amazing as it makes my bottoms look seamless as there is also not a pant line in sight
Will 100% be getting more
C
Best underwear to go under my gym shorts. Cannot notice them at all like all of my others!
G
I was genuinely so impressed with these thongs! They’re super soft, really comfortable and completely seamless, so you don’t see any lines underneath your clothes. I’ve been wearing them under leggings for workouts and they’re perfect — no digging in, no uncomfortable seams and they stay in place. Definitely some of the most comfortable underwear I’ve worn, and I’ll be reaching for these regularly!
P
The perfect thong for under activewear!! So great to finally find some seamless pants that are so comfy and breathable!