An essential piece of Ride Wear - whether worn from the start of a ride, or pulled out of a rear jersey pocket when a little protection is required, cycling arm warmers are your best friend on the road, and the Castelli NanoFlex Arm Warmer is an excellent example.
Offering a wind resistant outer is pretty standard in the world of arm warmers, but for the NanoFlex, things get really interesting when it starts raining and its water repellent properties come into play. Whilst not full-on rain proof, they will repel showers, which on fast descents or long stretches far from home, can be a really handy feature. Smooth, stretchy and highly breathable, they are great in every ride condition. A silicon top gripper completes the warmer.