Bolbove Bro'Bear Cable Knit Turtleneck Sweater for Small Dogs & Cats Knitwear SIZE Guide: Measure the chest at its widest point all the way around for CHEST Girth; Measure length of pet's back from the base of the neck to the base of the tail for BACK Length (Excluding the tail). We recommend one size up for comfort if your dog's measurement is the higher end of the range listed. Always choosing the size by the measurement of your pet (The chest girth and back length),not the weight or breeds simply.For jumpsuit with legs, we measure both chest girth and back length. Made of Acrylic Fabric to keep your pet warm. Package included: 1*Pet Sweater + 1*Bolbove Silver Keychain Made for Cats, Puppies and Small Sized Dogs Size Large: fits pet's Neck Girth 11 inches, Chest Girth 14.5 inches. The sweater is 11 inches in Length. Machine washable with similar color in cold water and tumble dry