HOW DO THEY DO THAT?
Castelli always strives for total performance and total innovation, but sometimes they surprise themselves. The Castelli Nanoflex Cycling Knee Warmer behaves just like the Thermoflex in dry conditions, but then provides unbelievable water repellency when it starts raining. Castelli doesn’t claim that it’s fully waterproof, but it’s the most effective thing they’ve ever made for keeping you comfortable in all conditions. It’s just barely short of a miracle.
- Water -resistant NanoFlex fabric
- Breathability, stretch and warmth
- Standard Thermoflex warmers
- Great in every possible condition