There is an adjustable stretch elastic waistband for maximum comfort. Great for users of every identity with a harness that fits most. The product is battery operated and can be powered by 2 triple A batteries. It is constructed from black phthalate free PVC, ABS plastic, and nylon. This body safe and lubricant compatible toy is one you'll want to return to time and again. Upgrade your sex life and fulfill your every fantasy with the Lux Fetish Unisex Vibrating Hollow Double Penetration toy, an exciting addition to any collection.