Simply lock your SPIDER onto any flat, non-porous surface, set the angle, and get to work. The suction is shockingly sturdy so you can thrust in and out with as much zeal as you desire. Stick it to the shower, under a desk, against the wall, on the floor, or wherever you want! Finally, here is a tight entry that actually functions like a real person. You simply have to try it to understand how good it feels.
STRONG suction cup with pivoting angle adjustment
Hypoallergenic, non-latex, & phthalate free”