The CyberGlass Cool Ice Mini Dong features a smooth tapered shaft and is even harness compatible with its concave base. Made from extremely hygienic CyberGlass, the Cool Ice Mini Dong is strong, yet has the ability to conduct heat by warming or cooling under a running tap. The smooth, seamless shaft will become very slippery once lubricant is applied and is naturally waterproof. It is phthalate free and can even be cleaned in the top draw of the dishwasher.