Nasstoys erection assistant hollow 6in vibrating strap on is fun for everyone! The hollow cavity allows for a penis user to insert themselves into the strap on to add girth or to help with ed but may be used by vulva owners as well as a traditional strap on.The Comfortable, jock style harness accommodates most body types fitting up to a 60-inch waist. Press and hold the button located on the bottom right side of the testicles to power on. Then press again to cycle through the 7 vibrating functions. To charge, insert the pin charger into the charging port located on the left testicle.For The best experience, please pair with a water-based lubricant and clean before and after each use with toy cleaner.7 vibration functionon, off function buttonphthalates freerohs compliantmaterials. Pvc and nylonsize length 6 inch, width 1.75 inchesrechargeablecharging time 130 mins.