Washable Period Pads. Help save up to 390 tampons per year going into landfill with these washable period pads. These pads are designed to be worn for up to 10-12 hours, day or night. These pads 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.