【Measure before you order】Please measure your dog's chest girth and neck according to our guide before buying. If you want our Sassy Pup Dog clothes to fit your puppy as perfectly as our models, it's better for you to send us your puppy's sizes and information if you are unsure we would love to help you pick out the correct size Made of 100% soft, durable and lightweight polyester to provide a comfy layer of warmth for those chilly days and nights. 4-legs design. No needs to worry about midnight potty breaks as our dog pajamas have an open belly for easy potty time. Sassy Pup 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. Slit for leash and harness 【Machine washable】