The Q36.5 Sun & Air arm covers are lightweight sleeves designed to provide 50 SPF UV protection during the season's hotter rides. They also offer a touch of comfort when you're out of the door early, or returning home late from a ride, but their focus is primarily to keep you safe from the sun. Seamlessly knitted with a polypropylene-polyamide-elastane thread the Covers are an ideal accessory for riding in climates that demand high UV protection.