PlayaPup Sun Protective Dog Visor, Kona Blue, Small Fashionable sun protective dog visor hat with hook and loop velcro closure to keep hat on, the perfect sun accessory to help cover their eyes while on their daily walk Made from UPF 50+ sun protective fabrics that help block 98% of UVA and UVB rays. Fabrics are free of sunscreen chemicals, great for sensitive pooches! Hat bill is wide and flexible yet sturdy to protect your dog's eyes, adjustable hook and loop velcro closure Cap of hat is cushioned for comfort, hat fits over ears and bill wraps around forehead SIZING: Measure around forehead from ear to ear using a flexible measuring tape. XXX - 4.5". XS - 5". S - 6". M - 7.5". L - 8.5". XL - 9.5" (in inches)