How do I know what size collar to choose?

The Golden Dog Co. collars come in 3 sizes and are also slightly adjustable within those sizes to fit the necks of most furry friends. We suggest measuring the neck of your pet to be absolutely sure. Please refer to our size guide for exact measurements. Dimensions are also listed within the product details of each listing in case you want to confirm the size of a particular style. If you are giving a Golden Dog Co. collar as a gift, the best rule of thumb is to match the S, M, L sizing to whether it is a Small, Medium, or Large size dog. If it happens to still be off, just send it back and Jack will send the correct size!