The Ultimate Folding Thunder-Paw Waterproof Dog Raincoat is composed of waterproof polyester and super-lightweight nylon. This dog raincoat is adjustable by both the hood and tail-end areas and completely folds into a mini zippered pouch that can be used as a compartmental zippered dog backpack pouch when opened. Features zippered belly hook and loop closures for easy on and off access. Convenient for all pet travelers. Sizing Guide: (From back of neck to tail area) Extra Small: 8"  Small: 10-12" Medium: 14-16" Large: 18-20" Extra Large: 22-24" Features: Folding Pet Intended For: Dog Base Material: 80% Polyester, 20% Nylon Care: Tumble Dry, Machine Wash Country of Origin: Imported