Castelli - Arm Warmer - Nano Flex 3G - Black -
 
Pick Nano Flex for warmers that are ideal for dry conditions but still provide bonus protection and comfort in wet weather. Castelli created water-resistant thermal fabrics, and their distinctive Nano Flex fabric is commonly copied but never replicated.

Compromising on weather-proofing? Not an option. Water-resistant & breathable Nano Flex fabric Flat-lock stitching single seam Dual-sided silicone grippers to maintain warmers in place 8°-20°C / 46°-68°F Weight: 66 g

Features: Windproof, Waterproof, Insulation, Breathability, Lightweight

Sizing guide
Small: 45-60kg, athlete wears a S/M jersey & shorts
Medium: 60-70kg, athlete wears a S/M jersey & shorts
Large: 70-80kg, athlete wears a L/XL jersey & shorts
XL: >80kg, athlete wears >XL jersey & shorts