Doctor Love Zinger Vibrating Sleeve Blue Batteries and pouch included. 11, 000 vibrations per minute. On and off switch. Easy to clean. Comfortable. One size fits most. Sleeve measures 2.25 inches wide by 3 inches in length. Top ring measures 1.25 inches in diameter. Bottom ring is 2 inches in diameter. Rings are textured for added stimulation. Please note shown on dildo, not included. Phthalate free materials Thermoplastic Elastomers TPE cage, ABS plastic bullet vibrator. Vibrating Cage requires 3 LR44 batteries. Batteries are included.