Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not leakproof

I don't know if this is standard or I recieved a bad box, but the seat of my baby's pants is always damp! Like the diaper isn't totally waterproof. We usually use Up&Up and have never had that problem. Aside from that, they fit him well and seem comfortable. I won't be buying them again though, and only use these for when I know he can be changed within an hour or so, otherwise he'll need new pants.