Natural Mat sell the most comfortable waterproof protectors available on the market. They are ideal for toddlers during potty training and ‘sickly’ babies. The mattress protector is made with two layers of soft organic flannelette and sandwiched in the middle is a waterproof membrane, which is child friendly and breathable. Naturalmat waterproof mattress protectors come with elastic bands on each corner so they can be attached securely to the mattress.