The “7” Fold Instead of folding your cup seven times, the name of this menstrual cup folding technique actually refers to the shape your cup will recreate. Menstrual cup brand Saalt shows us how to create this fold by first flattening your menstrual cup, then folding the top right corner of the rim to the opposite bottom corner of the cup. You'll notice when you look down at the cup that it should resemble the shape of the number seven.