harness is designed to fit almost any sized working dogs.It's five way adjustable so you can adjust it to fit to your dogs dimensions.Once all straps are adjusted, the harness can be quickly put on the dog by using only one buckle and strap.This harness is handmade from high quality, heavy duty strong leather. Designed so the resistance is on the shoulders and not on the throat our training harness allows dogs to bark and track in free way and still be restrained enough. Straps are 1 1/4 " wide, and assembled using capped rivets for extra durability. The leather is genuine drum dyed , pure vegtable tanned leather. A truly beautiful harness.