Coolibar UPF 50+ fabrics block 98% of UVA/UVB rays, look good, wear well and protect for a lifetime. Welcome back to health, ... happiness and fun in the sun. Coolibar sun protective clothing has long been recognized and endorsed by the American Academy of Dermatology, the Skin Cancer Foundation and the Melanoma International Foundation among others. Coolibar’s proprietary SUNTECT® fabrics are guaranteed UPF 50+ – the highest possible rating for sun protective fabrics. read more