Main Squeeze Endurance Trainer Ultraskyn Stroker Pussy from Doc Johnson Novelties. You can go the distance! Stamina training methods like edging have become standard as men everywhere learn to apply this technique for increased stamina and more powerful orgasms. Get in on the action with the Main Squeeze Endurance Trainer, a hard case stroker with a built in squeeze plate grip that allows the user to control the pressure. Featuring a realistic pussy opening and tight, textured interior in life like Ultraskyn, the Endurance Trainer warms to body temperature with use and emulates the feel of real skin. This stroker end cap adjusts to perfectly customize the strength of the suction desired, and a screw on top makes it easy to store safely and discreetly. Order now and start experiencing the sexual health benefits of endurance training today! Specifications total length 9 inches, insertable, usable length 8.75 inches, width, diameter 3.5 inches. Circumference 10.5 inches. Bulk weight 1.35 pounds. Package weight 1.6 pounds. Materials ABS plastic case, Thermoplastic Elastomers TPE stroker sleeve.