Endura thermolite arm warmersendura arm warmers keep you warm and dry in the colder months easily stored in your back pockets for quick on and off times features nylon45 polyester42 elastane13 thermolite with high performance repel teflon fabric protector for ultimate weather comfort with durable water repellency silicone gripper elastic at bicepsbuy endura clothing from chain reaction cycles the worlds largest online bike store