Unicorn Dog Hat Crochet, Unicorn Hat for Pet DB15 by MyknittDog Hat Unicorn 3D Designed and Handmade Crochet by Myknitt. Any custom dog hat are welcome. Made of 100% cotton yarn material. Measurements taken based on the picture shown above " Head circumference at base of ears (G)" XXS Round head trough ears until 10" (25. 4cm) $40 XS round head through ears until 11. 5 (29. 5cm) $40 S round head through ears until 13 (33cm) $45 M round head through ears until 16 (40cm) $45 L round head through ears until 19