M SIZE-SUITABLE FOR SMALL AND MEDIUM DOGS: Adjustable strap-designed with 2 ear holes at the top (recommended for long ear pets), and the adjustable non-elastic neck strap, the cap can easily keeps on and adjust for better fit. PREMIUM MATERIAL: High quality Oxford fabric outer layer and canvas lining(100% cotton) are durable and breathable, suitable for everyday use. SUN PROTECTION: With enough brim wraps around your dog's forehead, this hat can effectively protect your pet's eyes from strong sun rays during outdoor activities. MAKE YOUR PET BECOMES SPORT SUPERSTAR: See, fitness gurus is coming! This fashion and unique baseball dog cap will make your dog more handsome and eye-catching like a sport superstar. It's also the perfect costume dressing. SIZE INSTRUCTION: S-29-36CM, M-34-48CM, L-38-50CM