The male attachment ring is made from super soft silicone that is latex and phthalate free and can stretch to fit most girth sizes. Simply attach the male ring to the HumpUs (see Owners Guide), then use a suitable water based lubricant and place the ring over the penis. Once you press the start button on the remote control it will start stroking the penis up and down to give an amazing hands free masturbation. Adjust the HumpUs belt to ensure it stays in position allowing you to be hands free while the pleasure continues for you to enjoy. The HumpUs gently strokes at 100 strokes per minute, increase the speed as you go by pressing the speed up button on the remote up to 180 strokes per minute increasing your pleasure as you desire.
via Humpus – Unisex hands free sex toy.