Both are used for menstrual hygiene, but unlike sanitary pads, the cup does not absorb menstrual fluid, but collects it and you can empty it. It is possible, but sanitary napkins are made of cellulose, plastic, bleaching chemicals and absorbent powders, in this case, cups are a better choice for both the body and the environment, and finally, the capacity of cups is three to four times more than sanitary napkins!