Instruct: Classify the given Amazon review into its appropriate rating category
Query: Leaky bottle

Mine leaked after using it for a week. I thought it was surely something I did wrong, but everything was nice and tight and yet it leaked. Unfortunately, it was in my bag at the moment, so it leaked all over everything. What a shame! I was really enjoying it... well until it leaked. Not sure what happened, so can't give you more details, but certainly is not something I would try again.