The Pet Life Fashion Parka Dog Coat contains Thinsulate Thermal Heat Retention Technology has an inner shell specially inserted between the Fabric. This Pet Coat Features matching Tone-on-Tone Inner Fleece Fabrics for additional Warmth and Comfort. This Dog Jacket Features a Faux Fur Removable Zip-Off Hood and Usable Back Pockets .This Coat will keep your pet warmer during those Harsher Cold weather conditions or climates. In addition this Pet Coat Features Belly-Velcro closures for easier On and Off access. Available in Multiple Sizes and Colors.Sizing Guide: From Back of Neck to Tail area ("In" Inches)8" : EXTRA SMALL10-12": SMALL14-16": MEDIUM18-20": LARGE22-24": EXTRA LARGE