Male Penis Exercise Vacuum Machine Masturbation Cup
$18.99
Description
Size S: Diameter 33mm
Size M: Diameter 38cm
Size L: Diameter 42mm
The vacuum cup simulates the shape of glans and is comfortable to wear.
It is made of ABS safety material,
Automatic air shut-off, no air leakage, lift the valve to exhaust.
The silicone cover is soft and elastic.
The L Cup matches the large sleeve by default,
M，S Cup matches small size sleeve by default.
How to choose the cup:
Use a string around the thickest part of the glans when erecting, and then measure the length of the string.
The inner diameter of the large cup is 42mm (the circumference of the thickest part of the glans is more than 13cm)
The inner diameter of medium cup is 38 mm (the circumference of the thickest part of glans is 11.5-13 cm)
The inner diameter of small negative pressure cup is 33mm (below 11.5cm)
