Adds 3 inches to length30% Xtra girthVibratingBetter-than-real ?REALSKIN?WaterproofPhthalate-freeRoHS compliant Materials: Sleeve ? TPE Bullet Vibe ? ABSSize: Sleeve Size: Length ? 6.375 Diameter ? 1.5325 Bullet Vibe: Diameter ? 0.6825 X 2.25Uses 1 LR 44 (AG13)Batteries included