Donkey features Chewguard, which is a proprietary manufacturing process that adds a super tough, durable liner to each toy. The Chew Guard lining was specially engineered to withstand the daily rigors of a dog’s play. Donky is machine washable. Dogs are tough but chewguard is tougher! Free shipping and handling. One stop shop: For a full list of what we offer look up item number 27504180627236 choices to pick from.