Invisible period protection. Menstrual underwear looks like regular underwear but has integrated period protection. Instead of placing a pad in the panties, the protection is sewn directly into the garment. The Selenacare menstrual hipster absorbs 25 ml of menstrual blood and is perfect for light to medium flow days. Simply wash and reuse. After use, rinse the Selenacare menstrual underwear in cold water, then wash at 30 degrees and let air dry. This way, the material is preserved and the lifespan is extended.