Doc Johnson OPTIMALE- Reversible UR3 Stroker- Studs- Clear is an open-ended male masturbator manufactured by Doc Johnson. Ideal for men, this particular toy is very easy to clean and devoid of harmful ingredients like Phthalates. It even comes with dual openings with different textures for added sensations. Since it is so easy to hold, it can even be used during partner or solo sex. This toy comes with a black travel box.