One thing that will always stay true and constant about UV Skinz swim shirts is that our products block 98% of both UVA and UVB rays. UVB rays are the rays that cause sunburns, contribute the most to the development of skin cancer and are stronger during peak hours of the day, but UVA rays can penetrate glass and remain the same strength all year long.  Both contribute to premature wrinkling, freckling, and hyper-pigmentation. Slipping on a UV Skinz …