The endura thermolite arm warmers are ideal for those colder mornings and winter rides where you need a little extra warmth their compact design makes it easy to slip them on or off and store them away whilst the silicone grippers around the biceps help keep them in place endura thermolite arm warmer features thermolite material offers exceptional insulation high performance repel teflon fabric protector offers ultimate weather comfort with durable water repellency silic