Absorption is affected by many things, including your menstrual flow, position (sitting, standing, moving) and activity.
Our Bikini Period Underwear absorbs about 25 mL (roughly the amount held by 3-4 regular tampons) of menstrual fluid.
Our Sleep Shorts absorb about 71 mL (roughly the amount held by 6-10 regular tampons) of menstrual fluid.
We recommend you use Period Underwear in the way that works best for you, which might require some trial and error. Some people prefer to wear period underwear as a backup to other period care products, like pads, tampons, liners, or cup.