Size Check - S chest girth 12.2”, body length 12.5”, neck girth 9-12”, arm girth 6-9”, M chest girth 20”, body length 17”, neck girth 11-17”, arm girth 6-10”, L chest girth 23”, body length 20”, neck girth 16-22”, arm girth 6-11”,Please measure your dog's chest girth and back length according to our guide before buying. | Target Pet - Our pajamas are mainly for small to medium size dogs, all cats, rabbit and so on, such as Chihuahua, Poodle, Cup Poodle, Pomeranian, Yorkshire Terrier, Bichon Frise, Cocker Spaniel. So on according to our size chart carefully. We recommend that you can buy a bigger size for your puppy growth. | High Quality Material - Made of 100% polyester, promise super soft, durable and lightweight, best choice for chilly days and nights with this comfy layer of warmth. 4-legs design with elastic waist and arm around the body which is very friendly for dogs, easy for midnight potty time. | Smart Design - Elastic design make this pajama easy to put on and take off, Stylish and festival pajamas are not only comfortable and eye-catching, but also keep hair off to make your home clean and nice. Important that wearing pajamas is good idea for new puppies to keep warm. | Great Appearance - Red and black plaid design classical for whole season wearing.Cute Christmas pattern,The elk pattern sets off the atmosphere of Christmas.Let your pet have a good time at Christmas.