Physician Endorsed packable, washable 100 percent cotton Castaway sun hat. Be protected from the sun while looking fabulous, The lightweight Castaway sun hat with a 3.75 inch brim and fringed edge is wonderful for travel or at home, for sports, the beach, walking, hiking, or just about anything you can think of doing. Adjustable head size. Welcome to a world where sun protection and style are synonymous. Physician Endorsed, the leading line of hats and sunglasses which were tested and rated for maximum sun protection is pleased to present our spa collection. The spa collection, which stands for Sun Protection Accessories, offers Physician Endorsed’s trademark, guaranteed sun protection of up to SPF 30. Physician Endorsed makes sun protection a snap for fashionistas seeking the season’s must-have head wear looks. The innovative, chemical-free hats are specially constructed with tightly woven, natural fabrics, including 100 percent cotton and linen, designed to prevent cancer, wrinkles, and signs of aging due to sun exposure. Fabulous and functional, Physician Endorsed hats and sunglasses provide 96-99 percent protection against UVA and UVB rays, making them a favorite of celebrities, plastic surgeons and dermatologists.