Our Nano Flex warmers have been in our collection for seven years, and we’ve finally found a way to improve them. We’ve added an insert on the back in Nano Light fabric to help them bend around your elbow or knee better while keeping all the water protection. More comfort due to more flexibility, and in a slightly more compact package.
Features:
Water-resistant thermal and breathable Nano Flex fabric
Nano Light insert on back for extra stretch, bringing better fit and comfort
Double-sided silicone grippers to keep the warmers in place
The Castelli Nano Flex+ Knee Warmer is far and away, one of our most popular items. People can't seem to get enough of it.
