The V3 5mm gives you real support with more freedom to move than a 7mm. Here is who it suits, how it should feel, and how to size it.
What They Are
The V3 5mm Knee Sleeves use the same V3 construction as our 7mm, with layered diamond neoprene, an extended 28cm length and triple stitched seams, in a thinner 5mm build. You still get compression, warmth and support, with noticeably less restriction when you move.
Who They Are For
- CrossFit and functional fitness athletes mixing lifting with conditioning
- Lifters doing high-rep and volume work where a 7mm feels like too much
- Anyone new to knee sleeves who wants the most adaptable starting point
- Olympic lifters who want support without bulk in deep receiving positions
Who Should Look Elsewhere
- Training mostly heavy, low-rep squats? The V3 7mm gives more compression.
- Want something lighter still? Try the 3mm Double Ply.
- Want both? The 7mm + 5mm bundle gives you a pair for heavy days and a pair for everything else.
For the full comparison, read 7mm vs 5mm Knee Sleeves.
How to Size Them
- Where to measure: 8cm below the middle of the kneecap, knee slightly bent
- Sizes: XS to XXL
- Between sizes? Size up.
If you measure above the XXL range, the V3 7mm runs up to 4XL.
Looking After Them
Take them off after training, hand wash cold and air dry away from direct heat.
Find Your Size in Two Minutes
Weighing up 5mm against 7mm, or unsure of your size? The guide will settle it.
Our Knee Support Buying Guide brings everything into one place. Step 1 is a 30-second quiz that matches you to the right Mammal support for how you train. Step 4 is our size finder: pick your product, follow the measuring steps for it and it tells you your size.
Open the Knee Support Buying Guide ->
Every Mammal sleeve comes with 30-day free returns and a 12-month warranty, so if the fit is not right, we will sort it.