Single Large Cylinder
A single advanced-size cylinder for use with standard vacuum pumps (sold separately).
Measures 3.125 inches in length (not including tip), with a 0.875 inch inner opening diameter.
Once the cylinder has been put in place and air has been pumped out of it, the pump can be removed, but the cylinder will stay vacuum sealed. This allows the user to wear the cylinder for extended lengths of time.
Increased blood flow increases sensitivity and stimulates growth.
Some trans guys have reported significant gains in size by pumping consistently over time, and even many surgeons who perform metoidioplasty recommend pumping. It is interesting to note that some trans guys put a sleeve over the cylinder and have sex, without the need for a strap-on.
Manufactured by Size Matters.