While it may seem counterintuitive to put sleeves on for a hot summer ride, it certainly feels so right when doing it with the Louis Garneau Arm Coolers. Garneau's IceTek fabric incorporates a xylitol surface treatment. Xylitol is the organic compound found in chewing gum that makes your mouth feel cool and refreshed. IceTek fabric causes a similar refreshing feeling against the skin, as it absorbs heat from the body and converts sweat to a refrigerant. That cooling function aside, putting on the Arm Coolers is certainly more convenient than slapping sunscreen on every time you're trying to sneak in a training ride. The Arm Coolers have a UPF/SPF rating of 50, so they provide more than adequate protection from the sun's dangerous rays. A silicone gripper at the bicep keeps the coolers from sliding down, and a reflective logo adds an extra touch of visibility.