Washable Period Pants help save up to 390 tampons per year going into landfill with our washable period pants. The period pants are designed to be worn for up to 10-12 hours, day or night. These boxer style pants are made for heavy flows and hold the equivalent of 3-4 tampons (approx. 40ml). They can be washed repeatedly by hand or machine without the colour fading and are quick to air dry.