This is a spiked leather harness, hand-crafted with latigo leather. It is available in black or burgundy and in any size you need. The rivets we use are stainless steel and the spikes are riveted in. This is a very high quality harness at a great price! Each harness has an adjustment of about 6 inches in the front and 6 inches in the back, so if your dog is not quite full grown, make sure you order the harness to fit in one of the smaller holes so that the dog can grow into it. For proper measurement, measure the dog behind the front legs (around the rib cage area). There are 2 large D-rings to attach a leash to, one in the middle and one at the back of the harness.