These are spiked strap style collars. They are made with 1 1/2" synthetic leather. Our synthetic leather is a very durable PVC coated nylon which is engineered to be highly resistant to cuts and abrasion but still flexible at low temperatures. Unlike leather our synthetic leather will not rot, mold or fade. There are three rows of spikes on this collar with both 1/2" and 1" spikes. These collars are made with welded dee rings and die cast buckles. Available in black only. 100% Made in USA