The Thermal Endurance sleeve is built for long sessions: warmth, light compression and flexibility for running, HYROX and conditioning. Here is who it suits and how to size it.
What They Are
The Thermal Endurance Knee Sleeves combine thermal support fabric with light compression in a flexible design made for longer sessions. They help keep the joint warm and reduce stiffness, without the bulk of a lifting sleeve.
Who They Are For
- Runners and endurance athletes
- HYROX competitors
- Functional fitness and conditioning sessions
- Anyone whose knees feel stiff early in a session or in cold weather
Who Should Look Elsewhere
- Lifting heavy? Thermal sleeves offer light compression only. Look at the V3 5mm or V3 7mm.
- Want a bit more structure? The 3mm Double Ply sits between thermal and 5mm.
Read Thermal Knee Sleeves - Do You Need Them? for more on when warmth helps.
How to Size Them
- Where to measure: around the middle of the kneecap, with your knee bent to about 30 degrees
- Sizes: XS/S, M/L and XL/XXL
- Between sizes? Size down. You want them snug enough to stay put over long distances.
Looking After Them
Hand wash cold and air dry away from direct heat.
Shop Thermal Endurance Knee Sleeves ->
Find Your Size in Two Minutes
Check the Thermal is the right fit for your training, and get your size from your real measurement.
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.