The Louis Garneau Course Windpro Arm Warmers have the usual perks you'd expect, but with two key differences. The most immediately obvious one is the elastic free fit of the upper cuff, which LG is calling the Gladiator grip. This all but eliminates pinching and over compression while still keeping the warmers pulled up. Though it's a small detail, we love this feature, and can't stress it enough. The second notable element is the UPF 50 rating across the top and wrist cuff. Even though it's chilly, the sun's still out, and we as cyclists tend to not think about the amount of harmful UV rays that we expose ourselves to as much as 30 times the recommended amount. Remember Froome getting a sunburn through his film thin TT kit' Don't be Froome. Protect your skin. The Windpro Warmers are constructed primarily of LG's Light Wind Pro fabric, a fleece that blocks four times the wind that traditional fleece does while shedding rain and snow. The sides are ThermaSoft 180, which relegates body temperature and wicks moisture, and the wrist cuff is Lazer Rev, which provides comfort and support. The overall fit is very sleek, designed to eliminate any bulk. The Louis Garneau Course Windpro Arm Warmers is available in five sizes ranging from X Small to X Large and the color Blackwhite.