I followed the washing instructions and only washed once before use. When my daughter wet the bed for the first time, she wet the mattress. It's not waterproof. They sent me another one as a replacement and it was waterproof. I will update if anything changes. Update: The replacement also leaked after two washes. I told them about it and they offered me money to remove my bad review. There should probably be a lot more 1 star reviews here.
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