Many of the reviews for this product have included dissatisfied customers saying the case is not waterproof. I totally disagree. I have a daughter with special needs and I have to change and wash her sheets and mattress cover almost every day. She urinates or gets her diaper and clothes dirty through the night at least 4 times a week. I bought two of these cases and have been very pleased. However, I have never dried them in the dryer. I always lay/dry with a drip method. My only guess is that the customers complaining about the product malfunctioning must have tumble dried it. I give the product 4 stars instead of 5 because the manufacturer's cleaning instructions state that the product is suitable for tumble drying. I've found that every waterproof mattress pad I've ever tumble dried fails the product. This product is a great price for a great product. but if you want it to stay waterproof let it dry!
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