Peace of mind: OYO BABY waterproof undermats will provide excellent protection against fluids urine perspiration allergens dust mites and bacteria. It is 100% waterproof yet breathable comfortable and noiseless. The mat is vinyl (pvc) free and safe to sensitive skins. Silky smooth and soft to the touch: OYO BABY mattress under mat is covered by quality cotton fiber and high absorbent fiber liner which allow the mat to feel exceptionally smooth on the skin even after Repeated uses and washes. Breathable and noiseless barrier: unlike traditional waterproof mats that use vinyl (pvc) as barrier OYO BABY under mats use a safer material called TPU. TPU is noise free and totally breathable. TPU also prevents microorganisms and molds as well as dust mites ideal for ultimate allergy relief. Extremely versatile: no matter you are at home or on-the-go and travel put it on a bed a chair a sofa or on your lap use it for your toddler elderly parents this waterproof mat gets the job done. In addition to be mattress sheet cover it can also be used in the bassinet cradle crib and changing table as a changing mat cover or changing mat liner. Durable: OYO BABY waterproof mat features 3 layer construction with soft cotton fiber surface noiseless waterproof barrier middle layer and super absorbent fiber liner. The mat is machine washable. Machine wash at warm or cold temperature and tumble dry low only hang dry is recommended.