These pads are made to protect your horse from the lumps and bumps of your slotted D drop rigging. It is made with 100% merino wool and 100% wool felt with a very tough abrasion resistant material on the front. The snap is stainless steel and will not rust. Just slide this up your billet and snap it in place. They are sold in pairs. If you would like a color other than black please contact me. Thank you.