Warm Soft Winter Stripe Pets Cat Dog Christmas Knitted Hat Pom-pom Ball Cap with Dog Scarf Hat Set Available in 4 sizes.For Small and Medium dogs. Please review the photo of our size chart. CN XS:Ear distance:2.8''/7cm; Head diameter:4.4''-5.5''/11-14cm; Scarf Length:23.6''/60cm ; Scarf Width:2''/5cm CN S:Ear distance:4.3''/11cm; Head diameter:4.8''-5.9''/12-15cm; Scarf Length:23.6''/60cm ; Scarf Width:2''/5cm CN M:Ear distance:5.1''/13cm; Head diameter:5.1''-6.2''/13-16cm; Scarf Length:24.3''/62cm ; Scarf Width:2''/5cm CN L:Ear distance:6.2''/16cm; Head diameter:6.2''-7.9''/16-20cm; Scarf Length:25.6''/62cm ; Scarf Width:2.4''/6cm