NIKE Golf UV Sun Bucket Golf Hat 832687 88% POLYESTER 12% SPANDEX Nike Flex fabric stretches for an optimal fit. Dri-FIT technology helps keep you dry and comfortable. Wide 360 brim helps keep you covered in the elements. Elastic drawcord at the back lets you adjust your fit. This product provides UVA and UVB protection from the sun in the areas covered by the hat. Any closures must be fastened to give full UPF 40+ protection. It will not protect areas that are exposed. To protect these areas, the use of good quality sunscreen is recommended. 88% POLYESTER 12% SPANDEX