UPF 50+ Canvas Large Brim Self Tie Hat 100% Cotton Made of 100% cotton. One size fits most with size adjustable string, fitting up to 7 1/4. Brim measures 4 1/2 inches wide, upturn or downward. Crown measures 3 1/2 inches deep, lined inside, same color under brim. Thick, cool, packable and crushable material.