Size Small: Neck girth 10.8, chest girth 14.8, back length 9.8, suitable for small dogs. Please carefully measure the pet size before purchase to ensure proper fit. Quality Material: Made of warm fleece material, featuring good softness, stretching and comfort, breathable and lightweight, giving your pets a sense of mildness. Heartwarming Design: The O-Ring on the back, you can easily match with the dog leash, and the pet can be kept warm and controlled in cold weather. Easy to Wear: This dog vest is with pullover design to ensure an easy wearing experience, easy to take on and take off. Good Choice: A perfect gift for your dogs in this winter and no longer feel cold. Great gift for family or friends who owns a dog to deliver surprise. Size: Size Small: Neck girth 10.8, chest girth 14.8, back length 9.8 Size Medium: Neck girth 11.8, chest girth 16.7, back length 11.8 Size Large: Neck girth 12.8, chest girth 19.7, back length 13.8 Size X-Large: Neck girth 14.8, chest girth 22.6, back length 15.7 Size XX-Large: Neck girth 18.1, chest girth 25.6, back length 17.7 Size XXX-Large: Neck girth 20.5, chest girth 28.5, back length 19.7 Size XXXX-Large: Neck girth 22.4, chest girth 31.5, back length 21.7