Instruct: Classify Amazon reviews into positive or negative sentiment
Query: incredibly weak

my bike and my girlfriend's bike were next to each other, locked up, outside of my apartment. mine had a kryptonite u-lock, hers had this one (the bell hands off bike u-lock).we went outside and he bike was gone, mangled bell u-lock left on the ground. my bike was still there, but the u-lock was slightly bent.the thief obviously tried to get mine, couldn't do it, and went to hers and had no trouble at all. i definitely DO NOT suggest this lock at all if you live in an area that bicycle theft is a problem. FYI - i'm in chicago, so it's not like this is a rare occurrence, just keep it in mind.