Endura Windchill II Arm Warmers. Endura’s Windchill II Arm Warmers are made from mixed fabrics and Thermolite with a tough DWR finish to provide all the weather insulation, moisture wicking and comfort you need. These arm warmers also benefit from an ergonomic, multi-panel construction and feature internal silicone bicep grippers to prevent slippage and reflective flashes and logo to aid visibility in low-light conditions Features: Material: Nylon 45%, Polyester 42%, Elastane 13%Thermolite® fabric with tough DWR finishErgonomic, multi-panel constructionInternal silicone bicep gripperReflective flashes and logoTechnologies: Thermolite®: Ideal for cold weather cycling, Thermolite uses hollow-core fibre technology to create an insulating layer of warm air. The result is a lightweight, warm fabric with superior moisture vapour transport properties that doesn’t get heavy even when wet. The Thermolite quality developed by Endura has the added benefit of a high performance repel Teflon® fabric protector finish (from DuPont™) Buy Endura Clothing from Chain Reaction Cycles, the World’s Largest Online Bike Store.