Doc Johnson Novelties Optimale Men's Sexual Health and Wellness Reversible Stoker Rollerball Frost with discreet storage box. Small hand held male masturbation device. Optimale Reversible ULTRASKYN Stroker Rollerball Clear Stroke it just right! The Optimale Reversible ULTRASKYN Stroker Studs offers stimulating massage beads for an amazing lifelike feel; please your cock with two distinct sensations: silky smooth on one side, and intensely textured studs on the other. At 5 inches long, this plush, open ended stroker can easily be flipped inside out. Made of Ultra Realistic 3.0, this discreet masturbator warms in your hands, is easy to clean, and includes a sturdy yet sleek black box for travel and convenient storage. Phthalate free, body safe material with our antibacterial Sil-A-Gel formula; Proudly Made in America. Also available in two other distinct textures: Rollerball and Link. Total length 5 inches. Usable length 5 inches. Width/Diameter 2.20 inches. Circumference 6.90 inches. Video. 18.