The Pet Life Fashion Parka Dog Coat contains Thinsulate Thermal Heat Retention Technology as 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 Removeable Zip-Off Hood and Usable Back Pockets .Ths 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 SMALL 10-12"": SMALL 14-16"": MEDIUM 18-20"": LARGE 22-24"": EXTRA LARGE