This purty plug has a tapered tip to ease insertion, and it's bulbs provide lovely sensation, while the narrow neck allows your muscles to wrap around and hold it in. The flared base keeps it from slipping in too far while still fitting comfortably between your cheeks. The hypoallergenic glass is nonporous and body safe, and when cared for properly, is designed to last a lifetime. Run the plug under warm water or cold water for extra sensation. Since glass is nonporous, cleanup is a snap - simply wash with warm water and soap, rinse, dry, and store.