Our WINTER WHITE FASHION PARKA contains Thinsulate thermal heat retention technology specially inserted between the fabric. features matching tone on tone inner fleece lfabric.. The attention to detail along the backside are unique. Ribbed sleeves and inner fleece all match the details along the back side. You pet will stay warmer through those Harsh cold weather conditions. 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