MaruPet Spring/Summer Convertible Suspenders Two-Leg Jeans Braces Denim Overall Shorts Neck(Inch/cm)-XS:7.5"/21cm, S:9.0"/25cm, M:11.0"/29.5cm, L:12.0"33cm, XL:14.0"/38.5cm, when youm choose the two-leg custome size, please based on the chest size information to decide the purchased size Suitable Weight-XS:2.2-4lbs/1-1.8Kg, S:4.4-6.0lbs/2-2.8Kg, M:6.5-9.0lbs/3-4.2Kg, L:9.5-12.5lbs/4.5-6Kg, XL:13.5-17.5lbs/6.5-8Kg These outfits are only designed for SMALL dog breeds, when the puppy weight is over 17.5 LABS/ 8 KG, the outfits are not recommended and they are also a good idea as new puppies have less fat than an adult dog to help them keep warm Take each measurement a bit loosely and if any of the measurements are "between" two sizes, or your dog is still growing, larger size is recommended. Don't buy a particular size because that is what you always buy in a pet shop or online store, look at the size chart for CHEST and BODY and confirm the size before buy Made of finest quality cotton, it's soft, breathable and light-weigh and it's ease to care and durability. Gender:Unisex , perfect for walking, jogging, keeps pet safe and easy to spot. Use the cold water and hand-wash, the pajamas should be stored in dry and ventilated room environment and when it's not needed in a certain time