Package Dimensions: 32.6 x 28.8 x 5.4cm; 195 grams Color: Pink Size: S Number of items: 1 Requires Batteries: No Battery (s) included: No Material: polyester. Color: pink, gray. Sizes: XS, S, M, L, XL How to choose a size suitable for your puppy? Step 1: Use a flexible tape to measure the circumference (all around) at the widest part of your dog’s chest / rib cage. Step 2: Measure the neck circumference (the length around the neck) of your dog where he is comfortably lying down. Step 3: Refer to our size chart to choose the right size for your dog. Note: Bust size will take priority when selecting a size. If your measurement is close to the maximum, we recommend that you take a size for a more comfortable fit on your dog.