These are a heavy Duty collar, custom made to fit your dog. All metal hardware, heavy double ply nylon. We will also sell matching leashes. If you buy the leash we will ship this collar for free. If you are unhappy for any reason we will give you a refund. I supply all the local hunters and they love these strong collars. To get your measurement go around the dogs neck and add about 2.5 inches for growing room and adjustments.