Our boy short period underwear has a wide elastic waistband for maximum comfort. There's no cutting into the skin, so you can go ahead and wear even your tightest clothes. Great for those active days (sport, travel, trips...) or for wearing at night, keeping you perfectly protected and totally comfortable no matter what you are up to. COMPOSITION All fabrics, lace, and elastics used in the manufacturing of our underwear are made from certified organic cotton or other materials guaranteed to be free of harmful substances. CARE Sisters Republic menstrual panties can be washed and reused for several years. To maximize their absorbency, we recommend washing them twice before use. To help make sure they last longer, we recommend: Rinsing your underwear in cold water as soon as you take them off, making sure the water runs clear. Put it in the washing machine with the rest of your laundry, without any fabric softener or bleach. Do not use a tumble dryer, let them air dry.