The Pet Life 'Allegiance' Classical Plaided Insulated Dog Coat features a Classical Tattersall Plaided Pattern composed of 100% Cotton along the back that extends into the collar with reversible Ultra-Soft Sherpa that gently hugs the body and inner lined with High-Grade Plush Polyfill for added warmth and comfortability. Features Tough-Grade Velcro Belly Enclosures for convenient on and off access and a leash slit below the neck line. Available in Multiple Colors and Sizes. SIZING SPECIFICATIONS: In (Inches) "Back" Length is from Neck to Tail: * See image chart for sizing approximation. EXTRA SMALL: Back: 9.1" Chest: 17.3" Neck: 12.2" SMALL: Back: 11" Chest: 21.3" Neck: 13.8" MEDIUM: Back: 13.8" Chest: 24.4" Neck: 15" LARGE: Back: 18.1" Chest: 29.9" Neck: 16.9" EXTRA LARGE: Back: 22.8" Chest: 35.4" Neck: 18.9"