Optimale ULTRASKYN Vibrating Stroker Thick Ribs Blue. This is no ordinary stroker! The Optimale Vibrating Stroker Thick Ribs offers plush internal ridges for an amazing lifelike feel. The single hole creates a tight, natural suction around your cock. Increase your pleasure with the powerful 10 function vibrating bullet that will deliver incredible humming sensations. Made of ULTRASKYN, this discreet masturbator warms in your hands, is easy to clean, and includes a sturdy yet sleek black box for travel and convenient storage. Features: three distinct textures throughout interior. 10 function removable push button bullet. Made with ULTRASKYN, The most lifelike material in the world. Includes discreet storage box for after use or travel. Antibacterial Sil-A-Gel formula. Specifications: total length 5 inches. Insertable, usable length 4.8 inches, width, diameter 2.3 inches. Batteries included. Multi-Speeds. Functions 10. Material ABS plastic bullet vibrator, Thermoplastic Elastomers TPE. Proudly, made in America. Please note the center image shows a cut away version for interior details. Video. 18.