9.25 x 2.25 The Max Results Pump lets you perfectly control the pressure inside the clear, strong cylinder while you calculate the results with easy to read universal measurements. A easy to grip handle with finger-pull trigger and flexible hose that won't kink or crimp. Finally, a super soft silicone donut ring around the base of the cylinder provides an airtight seal that feels great as well. When you're done, a quick release purge valve up at the top end of the pump releases the pressure inside immediately. The pump cylinder is a full 9 1/4 inches long, fitting most men well. Use a good water based lube if needed, it will keep you more comfortable while working well with the silicone sleeve.