MaruPet Soild Color Puppy Casual Dog Four-Leg Jeans Overall Jumpsuit for Teddy, Pug, Chihuahua, Shih Tzu, Yorkshire Terriers, Papillon Neck(Inch/CM)--XS:7.87"/20cm, S:9.45"/24cm, M:11.02"/28cm, L:12.60"/32cm, XL:14.17"/36cm, please choose size maily based on the back since the jeasn overall is a four-leg outfit To help our customer choose size accurately, we have make a size chart in the left second picture (includes the neck, bust and back, and other notices), please 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. We strongly advise that please choose size based on our size information seriously, not on your experience and what you normal think since every procust has different size defination 100% jeans and cotton material, so it won't hurt the dog skin and the comfortable material can provide enough room for your baby dog to move and breathe There are many sizes for you to choose, don't hesitate to pursh it, you will fall in love with it Suggest handwashing, 1 x Pet clothes and the accesories is not given freely