The Giro Chrono UV Arm Sleeves offer comfortable coverage for riders who ride sun and petals blazing. These sleeves are made with WikPro™ fabric which provides excellent moisture wicking and keeps you dry and cool, while offering UPF 50+ protection. They have a comfortable amount of stretch so you can move freely and won't shift out of place. The Giro Chrono UV Arm Sleeves are an essential bike apparel item that will be a long-lasting staple to your riding collection.