CIE Powder Blue UPF 50 Dry Fit Long Sleeve

Ultraviolet Protection Factor (UPF) shows how much UVA and UVB radiation is blocked by a particular fabric. In order to receive a seal of recommendation from the Skin Cancer Foundation, an apparel item must be at least UPF 30, which means it allows 1/30th of the radiation from the sun to reach your skin. UPF 50+ fabrics are rated as providing excellent sun protection.