Vacuum Cupping Device

How to use
Lifting the yellow piston let the air into the cup
Insert the small end of tube connector into the gray rubber adapter connected to the pump.
Insert the big end of connector tube into gray rubber adapter and put it onto a cup body.
After installation,pull a trigger of the hand pump and check the air flow.
Place the cup on a spot where treatment is needed, and pull the pump 2-3 times to reach the appropriate negative pressure.
After the body surface was pulled inside the cup, gently turn the cup left and right, then press cup piston down to prevent air leakage.
Cups can be removed by lifting a piston.

Skin Reaction after Cupping
According to the pictures you can clearly know the health problem you have.