【Measure before order】Please measure your dog's chest girth and back length according to our guide before buying. If you want the CuteBone dog clothes to fit your puppy as perfectly as our models, it's better for you to send us your puppy's sizes information for help, we would like to help you to pick out the correct size. Also warm tip: these pjs Not for medium to large breeds of dogs, only for small breed ones. 【Material & design】Made of 100% soft, durable and lightweight polyester minky to provide a comfy layer of warmth for those chilly days and nights. 4-legs design with elastic waist and stretch that goes around the body not the length which is very friendly for dogs who have tails. And no needs to worry about midnight potty breaks as most of our dog pajamas have an open belly for easy potty time. 【Advantage】CuteBone dog pajamas are easy to put on and take off. And they are available in a variety of fun designs so you can show off your doggie's sense of style. Stylish pajamas are not only comfortable, but they keep dander and hair off of your furniture. Puppy pajamas are also a good idea as new puppies have less fat than an adult dog to help them keep warm.