The device is made of medical-grade material (hypoallergenic latex). It is not a toy of any kind — there’s no vibrating, no batteries: just pure resistance for muscle development.
Using a little lubricant, the device is inserted into the vagina and then inflated with the detachable air pump to adjust the size and provide internal resistance for your muscles to work against.
This will help you feel the contraction of each individual muscle and help strengthen your entire pelvic floor.