- Pump up your training routine! -American Pumpers Association - Durable cylinder with universal measurements - Silicone sleeve adds superior suction seal and ribbed textures for added sensations - Easy squeeze bulb with quick air release valve - Body safe Silicone enhancer ring included - Silicone (ring. sleeve) SAN (cylinder) Phthalate-Free PVC (hose) ABS (release valve) Rubber (bulb) Size 8 x 2/20.25cm x 5cm