Crisp designs many with matching pet carriers. You will love the fun colors! These dog harnesses are created in the ultra comfortable K-style that buckles in front of the chest and around the ribcage under the front legs. These Canvas Stripe Harnesses feature TWO buckles to fasten your dog safely in! Here are some tips on sizing: 10 - 12 means the harness will fit a dog with a chest size (from behind the front legs) of 10" - 12".