Contains 20 square cups and 10 curved cups. How to use When using for the first time after opening, press the silicone valve vertically to open the air hole. When inhaling, keep the inhaler and valve vertical. If you use a connecting hose, you can also use the area out of reach. It is even better if you warm your body before cupping. If the skin is dry, the cup will fall off easily. If you apply body lotion or oil before attaching the cupping cup, the adhesion will increase and it is better.