Instruct: Classify a given review as either positive or negative.
Query: Saves their mattress

Saves the night and their mattress. These are really thick and does a great job of absorbing the river which my boys pour out at night. No longer do I have to deal with wet crib mattresses and strong urine stench. For some reason all the other underpants leak...dunno. I have found the ones and my boys are finally having a goodnite.