The Colt Gear XXL Pumper Plug inflates evenly with an EZ-squeeze bulb and featur es a quick air release valve. This pliable and durable Silicone inflatable plug has a superior suction cup base. The probe, hose, and bulb are made with body-s afe, unscented, phthalate free silicone and the release valve is ABS. The probe is 6 inch x 1.75 inch x 4.5 cm before inflating.