ExOfficio Men's Air Strip Long Sleeve Shirt - Lightweight, Breathable Travel & Hiking Shirt for Outdoor Adventures

Product Description

Sun Protective UPF: Ultraviolent Protection Factor UPF is used to rate the sun protectiveness of a fabric. Unlike SPF, UPF applies to both UVA and UVB rays. Ratings run from UPF 5-50, with 8 being the rating for an average white t-shirt. Constant Protection With sun protective clothing, as long as the fabric covers your skin you are protected all day long. The more intense the sun, the higher the rating you should wear, especially if you will be out for an extended period of time. Higher Rating, Safer Skin A cotton t-shirt is rated between UPF 5-8, meaning it allows up to 20% of UV radiation to reach skin. According to the UPF standard, no rating below 15 can be called 'sun protective'. Read more