Just strap it on and have fun!a Black strap-on vibrator with a large external vibrator and a small internal vibrator. the large external vibrator (17 cm long, ø 3-4.3 cm) is slightly curved and can be used to penetrate the passive partner. the small internal vibrator (9.3 cm long, ø 3.8-4.2 cm) is for penetrating the active partner. both the vibrators have large glans, pronounced veins and 10 vibration modes that can be controlled with the remote control on a wire. the remote control can be placed into the small loop on the harness so that the hands are free to do other things. there are 12 holes in the harness so that the circumference can be adjusted from 78 cm to 108 cm. the string is 96 cm long and can be adjusted to fit. please order batteries separately: 3 x micro/aaa.silicone, abs, pu.