Our Pet Life Metallic Ski Parka contains Thinsulate thermal heat retention technology specially inserted between the fabric. Features include matching tone-on-tone inner fleece fabric and a faux fur removable zippered hood and "usable" back pockets. Your pet will stay warmer through those harsh cold weather conditions. Available in other colors. Sizing Guide: From back of neck to tail area (in inches) - | 8": X-Small | 10-12": Small | 14-16": Medium | 18-20": Large | 22-24": X-Large.