Easywin Pet Outdoor Accessories Elastic Chin Strap Doggy Puppy Dog Cat Visor Hat Sports Baseball Cap With Ear Holes Only for Small Dogs Adjustable non-elastic Strap Fashion Soild Baseball Cap Visor design, handsome and protect your baby from sun With two holes at the top, breathable and comfortable Size S: Dia15cm / 5.9", Head Girth: 35cm / 13.78"; Size M: Dia: 18cm / 7.08", Head Girth: 38cm / 14.96"