NZG UV Protection Arm Sleeves with Cooling Technology, 50+ UPF, for Cycling, Running, Golfing, Driving SUN PROTECTION  Durable fabric has a 50+ UPF and protects against UVA & UVB rays. ANTI-SLIP  Snug fit helps sleeves stay put without pulling or adjusting. COOLING TECHNOLOGY  CoolMax material ensures a refreshing, breezy wear. MULTI-PURPOSE  Great for all outdoor and indoor sports and activities. QUICK DRY  Stretch material allows sweat to evaporate faster.