"WUKA Organic Medium period pants are your complete tampon and pad replacement, wear it up to 8 hours on all but your heaviest days. The period pants hold at least 15 ml of period flow or light leaks - around 2-3 regular tampons worth. WUKA are designed for comfort so they are soft, comfy cotton undies in a bikini style. Each WUKA replaces 100 tampons and pads going to the landfill. Vegan Society Registered. Peta Approved. GOTs Certified Organic Cotton "