Support That Stays Put, Rep After Rep
A slip-on knee sleeve with four flexible side stays and a breathable stretch knit. Snug where you want it, quiet under joggers, ready for the gym, the trail or the 5-a-side pitch.
- Four spring side stays hold their shape through squats, stairs and long miles
- Breathable knit fabric — no clammy, sweaty feel after 40 minutes
- Slips on in seconds. No straps, no faff, no readjusting mid-set
- One size stretch fit, light enough to live in your gym bag at 120g
Tracked delivery · 30-day returns · Secure checkout
Tracked delivery to the UK in 7–12 working days 30-day returns, no interrogationThe Kit You Own Is Doing Half a Job
You know the routine. You dig out the old sleeve, pull it on, and by the second set it has rolled down to your shin. So you stop. You yank it up. You lose the rhythm you just spent ten minutes building.
Or it's the other version: a stiff strap-and-velcro contraption that grips like a tourniquet, itches under your trousers, and turns into a sweaty band within the first mile. Half the people who buy one leave it in a drawer by week three.
Meanwhile your knees keep doing the work — every stair, every squat, every commute, every Sunday walk. Gear that only behaves for ten minutes isn't gear. It's clutter.
One Sleeve. Four Stays. Zero Faff.
The FlexGuard is built around a simple idea: a knee sleeve should hold its position and let your skin breathe. Four flexible spring stays sit either side of the knee to keep the sleeve tracking with your leg, while the composite stretch knit moves with you instead of fighting you.
Four Side Stays
Flexible spring supports run down both sides of the knee to keep the sleeve aligned and stop it twisting when you bend.
Built to Breathe
Ventilated knit construction lets heat and moisture escape, so it stays comfortable well past the warm-up.
Full Range of Movement
Bends when you bend. Squats, lunges, pedal strokes and stairs — no stiff panel blocking the joint.
On in Five Seconds
Pull it up and go. No straps to thread, no velcro to line up, nothing to readjust between sets.
Disappears Under Clothing
Slim black profile sits flat under joggers, leggings, cycling tights or work trousers.
Weighs Nothing, Goes Everywhere
Around 120g. Lives in a gym bag, a rucksack side pocket or a glovebox without you noticing it.
Three Steps. That's the Whole Thing.
1. Pull It On
Slide the sleeve up over the foot and calf until the centre panel sits over your kneecap.
2. Set the Stays
Line the four side supports up with the sides of your knee. Give the top edge a light tug and you're set.
3. Get On With It
Train, run, ride, hike, walk the dog. The sleeve tracks with your leg instead of migrating down it.
FlexGuard vs. The Sleeve in Your Drawer
| Genusto FlexGuard | Generic bargain sleeves | |
|---|---|---|
| Four flexible side stays to hold position | ✓ | ✗ |
| Breathable ventilated knit | ✓ | ✗ |
| Slips on in seconds — no straps or velcro | ✓ | ✗ |
| Slim enough to wear under everyday clothing | ✓ | ✗ |
| Under 130g — genuinely bag-friendly | ✓ | ✗ |
| 30-day returns and real email support | ✓ | ✗ |
Product Specification
- Material
- Polyester composite stretch knit
- Support system
- 4 flexible spring side stays, ventilated construction
- Size
- One size — stretch fit
- Colour
- Black
- Weight
- Approx. 120g per sleeve
- Packed dimensions
- Approx. 12 × 21 × 2.5 cm
- In the box
- 1 × FlexGuard knee sleeve per unit
- Branding
- Clean, logo-free black finish
One size, stretch fit — designed to suit most adult legs. It should sit snug without pinching. Each unit is a single sleeve, so choose 2 if you want a pair. Not sure it's right for you? Email us before you order and we'll be straight with you.
Launch Pricing — While Stock Lasts
Sold as single sleeves. Most people take two: one per knee, or one to wear and one in the wash.
1 Sleeve
×22 Sleeves
×33 Sleeves
Tracked delivery 7–12 working days · 30-day returns · Secure checkout
30 Days to Change Your Mind
Wear it, train in it, judge it properly. If the FlexGuard isn't for you, contact us within 30 days of delivery and we'll walk you through the return. No hoops, no lecture.
Questions, Answered Straight
How long does delivery take?
Does one order include two sleeves?
Will it fit me?
Can I wear it under normal clothes?
What's it good for?
What if I want to return it?
Knee Support Guides and Advice
Knee Support That Doesn't Slip Down: How to Fix It
Knee support that doesn't slip down starts with fit, not price. Learn why sleeves migrate, how to measure properly and what to check before you buy another.
Knee Support for Standing All Day at Work: A Guide
Knee support for standing all day at work: how to pick something breathable and discreet enough for a full shift, plus simple habits that ease tired knees.
How to Choose a Knee Support for Hiking: Walker's Guide
How to choose a knee support for hiking: stays, straps, breathability and packed weight explained, so you buy the right one for hills and long days out.
Launch Pricing — While Stock Lasts
30 Days to Change Your Mind
Add My FlexGuard to the BasketTracked delivery 7–12 working days · 30-day returns · Secure checkout