Physician Endorsed Sophia Straw Round Crown Floppy Hat is a fashionable, lightweight, head size adjustable, packable, and sun protective hat. Made of 100% Toyo. Brim measures 5.5”, which gives you full sun protection coverage for your ears and nose. This is a must have hat. Head-size adjustable, packable, sun protective and fashionable. Welcome to a world where sun protection and style are synonymous. Physician Endorsed, the leading line of hats. 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.