★★★★★
"My lower belly always showed through"
I'd tried so many leggings before this one. For the first time my tummy is actually held in.
The leggings that reshape your silhouette
High-Compression Shaping Fabric, Smooths your stomach, lifts and enhances your curves, with full opacity.
I want it ↓
★★★★★
Their problem, finally solved
★★★★★
"All my leggings used to be see-through..."
I’ve bought 4 pairs before and every time you could see everything when bending down. This one is exactly what I was looking for. Highly recommend !
★★★★★
"My biggest worry on my period..."
My stomach would bloat and my lower belly would spill over the waistband. I didn't even want to turn sideways anymore. With these everything stays in place even on the bloated days. And they're completely opaque. So happy with them !
★★★★★
"No legging ever gave me a butt..."
I really wanted to enhance my shape, but no other legging ever gave me the effect I was after. This one finally changed that so happy with the result.
THE FABRIC
Four things most leggings get wrong
Holds in your lower belly
Reinforced waistband. It holds, it doesn't squeeze.
Lifts your glutes
Curves enhanced through a tailored shape and reinforced stitching.
Ultra opaque
Impossible to see through, whatever the size you choose.
320g/m² fabric
Breathable, and it won't bobble after three washes.
THE DIFFERENCE
Other leggings compress. Ours supports.
★★★★★
+1,786 women won over
BUILT FOR EVERY SESSION
High-Waisted Tummy Control Legging – Onyx
- Holds in your lower belly
- Lifts your glutes
- Fits XS to L — true to your usual size
How many leggings do you want ?
What size ?
Delivery in 48–72h · Secure payment
15-day trial — love it or your money back
In stock · estimated delivery between
Sun 20 September and Tue 22 September
Almost out of stock ! Sizes S and M sell out first every time we restock.
15
DAYS
Wrong fit ? We swap it.
Order your size, try it on at home. Wrong fit, or not what you hoped ? Tell us within 15 days — free exchange, or your money back. Tags on, unwashed
I was so happy with my first order that I came back for a second one. Same great experience, same quality… I’m just as happy !
Charlotte T.
★★★★★
Honestly, I didn’t expect my order to arrive so quickly. It arrived fast and was perfectly packaged such a great surprise !
Maja K.
★★★★★
I ordered the wrong size the first time, but the exchange was easy and quick. Now that I have the right size, the leggings are perfect !
Ida B.
★★★★★
I had a question before ordering and received a quick reply. The customer support team was really clear and genuinely helped me make the right choice
Hannah D.
★★★★★
Product Details
Product Details
69% Nylon, 31% Spandex
Because it combines technical performance, refined design, and real comfort.
Every piece has been designed based on your feedback to meet your needs: lower belly support, a balanced silhouette, breathability, and durability.
Size & Fit
Size & Fit
Order your usual size. If you're between two sizes, we recommend sizing down for a tighter fit, or sizing up for a looser fit.
Care Instructions
Care Instructions
Cold wash only (do not exceed 30°C)
Cool Iron
Do not bleach
Do not tumble dry
Line dry in the shade
Shipping, Exchanges & Returns
Shipping, Exchanges & Returns
Standard shipping : 5-8 business days, FREE
Express shipping : 2-3 business days, 4.99€
Returns and refunds
Size exchange : FREE within 15 days of delivery
Refund : accepted within 15 days 4.99€ (or £ equivalent) deducted to cover return shipping
The Fitgirls' Favourite Legging
Lifted, sculpted glutes thanks to the technical pattern.
We go to the gym to feel better and watch our body change.
The legging features a technical pattern that visually lifts and rounds the glutes, for a more balanced silhouette.
FIT
Find your size
All measurements in centimetres, taken flat and doubled. If you're between two sizes, size down for more compression.
How it fits
Runs small
True to size
Runs large
XS
UK 4-6
Waist
64 cm
Hip
89 cm
Inseam
76 cm
S
UK 8-10
Waist
70 cm
Hip
97 cm
Inseam
76 cm
M
UK 12-14
Waist
76 cm
Hip
104 cm
Inseam
79 cm
L
UK 16-18
Waist
84 cm
Hip
110 cm
Inseam
79 cm
1 Waist
Measure around the narrowest part of your waist, just above the belly button. Keep the tape snug, not tight.
2 Hip
Measure around the fullest part of your hips, feet together, tape parallel to the floor.
Between two sizes? Size down for stronger hold, size up for everyday comfort. Wrong fit is exchanged free within 15 days.
Excellent
4,8
Who better to talk about it than our customers ?
Extraordinary brand xx !!
I've never been disappointed (even with the V1). In my opinion well above the other brands specialising in fitness/gym clothing. Nothing to fault: comfort, look, quality... it's all there. A huge thank you!
EH
Elisa H.
Verified Customer
It doesn’t roll down
I had given up on shaping leggings because the waistband always rolled down. This one stays exactly where it should throughout my workout
IW
Isla W.
Verified Customer
It really smooths the silhouette
I feel so much more comfortable wearing it. I was worried the fitted fabric would make cellulite more noticeable, but it actually gives a smoother look
SW
Sophie W.
Verified Customer
I even wear it outside the gym
it’s become one of my favourite leggings. I originally just wanted workout leggings and was worried the shaping effect would make them uncomfortable for everyday wear
MP
Mia P.
Verified Customer
A real push up effect!!
My curves look so much better in it! I was mainly worried the push up effect would look too artificial but the result is really natural
SL
Sofia L.
Verified Customer
Perfect for the tummy
The support around my lower tummy is exactly what I was looking for. I was worried the waistband would feel too tight but it doesn’t at all !
OB
Olivia B.
Verified Customer
Comfortable despite the compression
I mainly wanted a visible shaping effect and it definitely delivers. I just expected it to be much less comfortable.
ES
Elin S.
Verified Customer
Thankss
Lovely fabric +++ Comfort around the stomach +++ Flattering cut. Great colour
AK
Alice K.
Verified Customer
Just wow!!!!
The legging hold you in properly, the size is true to fit and the colour is identical to the photo on the site
VL
Valerie L.
Verified Customer
I really love it
Gorgeous set and pleasant to wear, it shows off your shape. I love it
AH
Ashley H.
Verified Customer
FAQ
Does it stay just as tight after multiple washes ?
Yes. The fabric is made of 69% nylon and 31% elastane, and it's the elastane that holds the shaping in place.
Cold wash, no fabric softener, air dry and it keeps its compression.
Tumble drying and fabric softener are exactly what turn a shaping legging into a saggy one after 5 washes.
Will sweat marks be visible ?
The Onyx legging is made with a breathable, sweat-wicking fabric designed to help keep you comfortable during your workout while minimizing the appearance of sweat marks.
Can I actually train in these or does the shaping stop me breathing properly ?
Yes, you can train in these. The compression is concentrated on the lower belly and stays soft and flexible around the ribs and thighs.
What sports is it suitable for ?
The Onyx Legging is designed for all kinds of workouts, including gym training, fitness, running, yoga, Pilates, HIIT, and more. Its supportive, flexible fit allows you to move freely while staying comfortably in place.
Does the fabric attract dust and pet hair ?
The fabric is designed to minimize the attraction of dust and small fibers. However, like most dark-colored leggings, some pet hair or lint may occasionally be visible. It can easily be removed with your hand or a lint roller.
LET’S WORK TOGETHER
Would you like to collaborate with Perftechx ?
Content creators, influencers & athletes we’d love to hear from you. Reach out to us for partnership and collaboration opportunities.