North Wolf Wool Buffing Pad is made of 100% wool material, Short nap Wool Pad With Foam 8 MM. North Wolf good bonding technology ensures wool face not tear apart from the hook and loop. This wool pad without a sponge middle layer, more durable, suggest to use with an interface pad for a cushion. It is a washable wool pad , no worry for damage. Suggest to apply with rotary machine and 6inch backing plate.