Adjustable: This jacket will keep your dog warm during the colder months. Hook and loop adjustable waist closure. Waterproof & Lightweight: Large coverage dog jacket keeps your dog warm without suffocating. Sporty jacket with plenty of freedom of movement, waterproof, micro-perforated, hard-wearing rip-stop material. Can be worn with a dog bag: zipper on the back to attach the dog bag to the dog harness under the jacket. Machine washable but hand wash recommended. Please air dry. Measurements: If you are between sizes, choose the larger model.