ZnO Fabric™ ... We developed the very first UPF 50+ slub fabric by knitting a subtle, texture look and breezy drape in our comfy-soft Organic Cotton ZnO™ fabric. SO SOFT! Fabric blended with zinc oxide to give the finest sun protection. Coolibar was the first clothing company to be receive The Skin Cancer Foundation’s Seal of Recommendation- their R & D team develops innovative, proprietary fabrics. these fabrics are infused with millions of sun-bouncing minerals at the fiber or fabric level, and they never wash out. The fabrics are woven in such a manner that makes the them virtually impermeable by UV rays. They are designed to last. Reposhing this item I purchased from @ashleyjasmine_m. I was hoping it would work for me (female) but it was definitely a male fit, with wider shoulders and arms and the body was a perfect mens size small. Too bad because the color is so pretty, the fabric so soft and light, with top-notch sun protection. Questions? Leave a comment below!