This hat is one size fits most and provides total head coverage for women with hair loss due to cancer, chemotherapy, alopecia or other types of medical hair loss. It also looks great on women with hair because it is just so fashionable. The Opal Sun Hat is the perfect style for summer and will look great with just about anything in your wardrobe. Wear it poolside with your favorite bathing suit, to the beach, with a sundress, or just for a stroll in the park. We just know you're going to love this look!