Size:S(Chest:12.0″, Back:10.0″)-for SMALL DOG To see more similar products, please click the brand name MaruPet or browse in our store Sister Amy. Your carefully choice will avoid plenty of inconvenience of returns. Please choosing the size by the measurement of your pet (The CHEST and Body Length) since it’s a four-leg, not the weight or breeds simply. Any questions about fit before you bid or make a purchase, please measure carefully before buying and email Sister Amy directly for some help, your cooperation and understanding is highly appreciated. You can find a SIZE CHART on every product page. If your pet is still growing, please take this into consideration when choosing the size. SIZE ATTENTION: 1.If any of the measurements are “between” two sizes, choose the larger size is recommended. If your measurements are toward the upper end of the range given for a particular size, you may also want to choose the larger size, as you may also wish to do for heavily coated dogs to accommodate all that fur. 2.Take each measurement a bit loosely, so there will be room for your dog to move and breathe, but not too loose. The clothes is designed in standard sizing, every pet has their own body shape, it is difficult to make sure every clothes can fit all the pets perfectly, so we strongly advise that you need to choose size based on our size information seriously, not on your experience and what you normal think abou size since every product has different size defination. Package Include: 1 x Pet Sweater and the accesoriey is not given freely. Return Policy: Free exchange for wrong item shipped or item damaged. For DO NOT LIKE STYLE/COLOR reason or SIZE PROBLEM or PERSONAL REASON(such as late delivery, but still during Amazon estimaed delivery date Or No longer needed etc.), customer’s responsibility to return the items to our facility in US. Thank you for your understanding.