Leak proof panties, also known as period panties, are designed to provide an extra layer of protection during menstruation or other situations where unexpected leaks may occur. These panties are made with a special fabric that is absorbent, yet waterproof, to prevent leaks from seeping through to your clothing. Features & Benefits Capable of Absorbing 3 ml (1 Light Tampon). Easy to wash. Reusable and cost-saving. Reduces use of disposable menstrual products. Promotes and Eco-friendly Lifestyle. Fabrication & Care Lining Layer: 95% Cotton / 5% Spandex. Middle Layer: 80% polyester / 20% Nylon/Breathable PUL. Outer Layer: 95% Bamboo / 5% Spandex. Care: Rinse with cold water before machine washing, Hang dry, Do not bleach, Do not iron.