Palm-Tec Overdrive Vibro Sleeve Clear Male Masturbation device. Stroke into overdrive. Ergonomically designed to fit in the palm just right and contoured inside and out for a powerful finish. The textured interior is tight enough for friction and contains ultra satisfying inner texture for enhanced sensations. For your stroking pleasure the Overdrive is made of clear, ultra stretchy Thermoplastic Rubber TPR, so it conforms to your rod and comes equipped with an optional vibrating bullet so you can add some vibration to your stroke. This clear stroker is light weight and travel ready, perfect for the man on the go! Measurements sleeve 5 inches in length and 1.125 inch inside diameter not stretched. Bullet vibrator 3.25 inches in length and 0.68 inch in diameter. Materials Thermoplastic Rubber TPR sleeve, ABS plastic bullet vibrator. Color Clear. Note bullet vibrator requires 1 AAA battery, included