For the Ultimate Sensation: Insert the vibrating bullet into the hole on the bottom of the sleeve. Cleaning Instructions: Remove the sleeve from the can and clean thoroughly with Refresh® Toy Cleaner and warm water. To preserve your PDX ELITE Vibrating Oral Stroker's original softness, apply Fanta Flesh Revive® powder after it has dried. Length: 16.5 cm Width: 7.1 cm Height: 7.1 cm Inner Diameter: 3.8 cm Oral Insertion Length: 12.7 cm Weight: 320.34 grams Battery Info: 3 LR44 / AG13 (1.5V) (Included) Material: Thermoplastic Elastomer (TPE), ABS Plastic