Fitting snugly around the mouth of most pumps, the Universal Silicone Pump Sleeve from Cal Exotic, cushions the entrance to your enhancer, while keeping an airtight seal for the most impressive results possible. As well as the practical applications of the sleeve, it also adds a dimension of pleasure to your pumping experience, with a nice thick ribbed pattern inside to massage and stimulate. Made from hygienic pure silicone, the sleeve can be boiled or bleached for sterilization, as well as cleaned with soap and water, toy cleaner, or run through the dishwasher.