Pumped Silicone Pump Sleeve Medium Black from Shots Toys. A super soft and stretchy silicone sleeve designed to maximize comfort and quickly and effectively create an airtight vacuum on Pumped penis cylinders. Warning: please read product manual before using any type of vacuum pump or constriction ring. Stop using the devices immediately if you experience any pain or discomfort. Dimensions package 6.1 inches by 3.54 inches by 1.38 inches. Weight package 1.76 ounces. Product dimensions 2.56 inches by 2.56 inches by 1.18 inches. Product weight 0.71 ounce. Product diameter 2.56 inches. Inner diameter 2.28 inches. Phthalate free materials Silicone.