Squats, deadlifts and Olympic lifting all load the knee differently - and the best knee support for each movement reflects those differences. Here is a movement-by-movement breakdown of what works, what does not and how to choose the right option for the way you train.
The knee is involved in every major lower body movement in strength training. But it is not involved in the same way across all of them. The demands a heavy squat places on the knee are fundamentally different to those of a deadlift or a snatch - and the knee support that serves you best in one movement may not be the right choice for another.
Here is a clear, movement-by-movement breakdown.
Knee Support for Squats
The squat is where knee support matters most. The combination of heavy load, deep knee flexion and repeated effort across multiple sets places more sustained demand on the knee joint than almost any other movement in the gym.
During a squat the knee is loaded in significant flexion - the joint structures, tendons and surrounding musculature are all working hard to control the descent and drive the ascent. Warmth, compression and proprioceptive feedback all contribute meaningfully to how well the knee handles that demand across a full session.
For general strength training squats - Mammal V3 5mm or 7mm Knee Sleeves
The V3 5mm and 7mm are both strong choices for squatting, with the right option depending on how heavy you are lifting and how much restriction you are comfortable with.
The 5mm at £45.95 provides meaningful compression and warmth while moving more freely through a full range of motion. For athletes squatting at moderate to heavy loads who also do accessory work and conditioning in the same session, the 5mm is the more practical all-day choice.
The 7mm at £45.95 provides significantly more compression and warmth - the choice for serious strength athletes who are regularly squatting above 1.5x bodyweight and want maximum joint support under heavy loads. The trade-off is stiffness that can restrict range of motion at full depth.
Shop V3 5mm Knee Sleeves - £45.95 ->
Shop V3 7mm Knee Sleeves - £45.95 ->
For maximal squats and powerlifting - Mammal Stiff Knee Sleeves Pro
For athletes pushing maximal squat loads - competition powerlifters, strongman competitors and anyone regularly testing their one rep max - the Mammal Stiff Knee Sleeves Pro at £86.95 is the most supportive option available.
Built from high-density Stiff CR Neoprene with a 30cm sleeve height, the Stiff Pro delivers a locked-in feel and generates meaningful elastic rebound at the bottom of a heavy squat. That rebound effect - the stored energy in the compressed sleeve being released during the drive out of the hole - is what separates a stiff sleeve from standard neoprene at maximal loads.
Rated 4.8 stars from over 132 reviews. 12-month product warranty as standard.
Shop Mammal Stiff Knee Sleeves Pro - £86.95 ->
For athletes who find standard sleeves roll under load - Mammal V3 7mm Straight Cuff
The V3 7mm Straight Cuff at £49.95 solves the specific problem of sleeve movement under a loaded bar. The straight edge construction sits flush against the leg without rolling or shifting during heavy squats - keeping the sleeve exactly where you placed it from the first rep to the last.
Shop V3 7mm Straight Cuff Knee Sleeves - £49.95 ->
Knee Support for Deadlifts
The deadlift is primarily a hip-dominant movement - the knee extends from a bent starting position but does not go through the same deep flexion or sustained loading that a squat demands. For most deadlift variations, the knee is a secondary consideration rather than the primary one.
That said, the knee is still involved - particularly during the setup of a conventional deadlift, during Romanian deadlifts and during deficit pulls where the range of motion increases. Athletes who deadlift heavy regularly and experience knee discomfort during pulling movements benefit from the warmth and compression a sleeve provides.
For conventional and sumo deadlifts - Mammal V3 5mm Knee Sleeves
The 5mm is the practical choice for deadlifting. It provides enough compression and warmth to support the knee during the pulling setup without the bulk or stiffness of a 7mm sleeve that serves little additional purpose in a hip-dominant movement. Many powerlifters squat in a 7mm sleeve and deadlift in a 5mm for exactly this reason.
Shop V3 5mm Knee Sleeves - £45.95 ->
For athletes with anterior knee pain during deadlifts - Mammal Knee Patella Support Straps
If anterior knee pain or patellar tendinopathy is causing discomfort during the deadlift setup or during Romanian deadlifts, a patella strap provides targeted compression directly to the patellar tendon without the bulk of a full sleeve. At £14.95 it is the most accessible and targeted solution for this specific issue.
Shop Mammal Knee Patella Support Straps - £14.95 ->
Knee Support for Olympic Lifting
Olympic lifting - the snatch and the clean and jerk - places unique demands on the knee. The receiving positions of both lifts require maximum knee flexion at significant speed and load. The knee needs to be stable, warm and supported - but the sleeve cannot be so stiff that it restricts the depth of the catch position or the speed of the movement.
This is why the knee support requirements of Olympic lifting differ from powerlifting. A 7mm stiff sleeve that works brilliantly for a heavy back squat can actively hurt performance in a snatch receiving position where maximum depth and speed are critical.
For Olympic lifting - Mammal 3mm Double Ply or V3 5mm Knee Sleeves
The 3mm double ply at £25.95 is the most popular choice among Olympic weightlifters. The double ply construction delivers meaningful compression and joint warmth while remaining significantly more flexible than any neoprene sleeve at 5mm or above. Full depth catching positions, fast transitions and repeated high-rep technique work all feel natural in a 3mm double ply sleeve in a way they do not in thicker options.
The V3 5mm is the alternative for Olympic lifters who want more compression than the 3mm double ply provides - particularly for heavier strength work within a weightlifting programme. It sits at the boundary of what remains practical for Olympic lifting without significantly restricting movement.
Shop Mammal 3mm Double Ply Knee Sleeves - £25.95 ->
Shop V3 5mm Knee Sleeves - £45.95 ->
Quick Reference - The Right Sleeve by Movement
- Heavy squats - general strength training - V3 5mm or V3 7mm
- Maximal squat attempts - powerlifting - Mammal Stiff Knee Sleeves Pro
- Squats where sleeve rolls under load - V3 7mm Straight Cuff
- Conventional and sumo deadlifts - V3 5mm
- Anterior knee pain during deadlifts - Mammal Patella Strap
- Olympic lifting - snatch and clean and jerk - 3mm Double Ply or V3 5mm
- Mixed training across all three movements - V3 5mm as the most versatile single option
Not Sure Which Is Right for You?
Use our knee support buying guide to find the right option for your training in under two minutes - or browse the full range and compare every option side by side.
Every Mammal Strength knee sleeve is backed by our full guarantees:
- 12-Month Product Warranty - covered against manufacturing defects and rips and tears for a full year
- 30-Day No-Quibble Returns - not the right fit or size? Send it back within 30 days
- Tested by Real Athletes - used daily by CrossFit, weightlifting and strength athletes worldwide
- Fast, Reliable Shipping - dispatched quickly from the UK
Find your perfect knee sleeve ->
