Castelli Nano Flex + Knee Warmers
Clothing - Warmers
Castelli Nano Flex+ Winter KneeÂ Warmers. They are made of water-resistant, thermal and breathable Nano Flex fabric.
Castelli Nano Flex+ Knee Warmers
For that extra bit of warmth on very cold days, Castelli Nano Flex knee warmers are a great option. They are made of water-resistant, thermal and breathable Nano Flex fabric. On the back of the knee, they also have a Nano Light insert which basically just adds some extra flexibility, allowing them to be more stretchy and therefore more comfortable. At the top of the warmers, you'll find double-sided silicone grippers so that you can be sure they will stay in place during your ride.