A Natural Mind pads are waterproof, with NO leaking at all, thanks to the outer PUL material. They are SUPER absorbable, more than disposable in fact, and they feel dry while using them. The inline is made of 100 % natural material - they feel very comfortable on the skin, no plastic - more like clothes. They are more hygienic because of the bamboo material, which is breathable so there is NO smell. Very easy to clean! Soak them in COLD water, rinse them, wash them with soap, and dry them in the sun. You will never have to buy pads again for a least 10 years or more. You will never run out of pads. Say goodbye to worries about waste. They are so much better for you and for the environment! They come in 4 sizes. S, M, L, XL.