Adds 3 inches to length 30% Xtra girth Vibrating Better-than-real “REALSKIN” Waterproof Phthalate-free RoHS compliant Materials: Sleeve – TPE, Bullet Vibe – ABS Size: Sleeve Size: Length – 6.375in., Diameter – 1.5325in., Bullet Vibe: Diameter – 0.6825in. X 2.25in. Uses 1 LR 44 (AG13) Batteries included