Helly Hansen's comfortable and quick-drying mens T-shirt has all the technical and design details you need for a warm summer on the water. Made with polyester jersey and upgraded with UPF 40 sun protection using the S.Caf process. S.Caf fabric technology infuses the fabric with used coffee grounds, creating long-lasting sun protection, as well as making the T-shirt quick-dry and odour-resistant. This is a certified bluesign product.