Benefits include enhanced sexual pleasure, greater moistness, lower urination needs,and core/abdominal muscle development. For tightening purposes, such as post-pregnancy,large eggs can be used to start with gradual movement to smaller eggs. For moistening purposes,smaller eggs can be exceedingly beneficial. Can also be used as decoration display,crystal healing or spiritual purpose. How to use yoni egg: Lay down comfortably, open the legs and insert the egg with the bigger part first. Use only the tip of your finger to ease it in. Yoni eggs can be used during meditation, while sitting down watching television or doing work, or while walking around doing every day activities. How to clean: Please clean the Eggs with warm water and soap or boiling for thorough sterilization before first use, then after every using wash them with soap and water,and wrap them in a soft cloth.