The Back on Track® Fleece Coat is designed to keep your pet utterly warm and cozy. The garment may NOT be waterproof; however it has the same basic design & dimensions of the standard Dog Rug, and is manufactured from the soft, revolutionary Welltex™ ceramic infused polypropylene fabric. Comes in a range of sizes (Extra Small, Small, Medium, Large, Extra Large and XX Large). Length: Measure back from withers to root of tail.