Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Heavy Lock

This lock adds some heft to the bike, which you can really tell when you lift and carry the bike.The included bracket to attach the lock to the bike frame, itself has some size. Do to my bikes frame, Trek 3 Series, with water bottle, you are very limited in where you can attach the lock and not have it get in the way of your legs. I ended up attaching it to the seat post and moving the reflector, it is off to the one side but its out of the way.If you can try out the various sizes; MINI, STD, LG this will help you see what fits the bike and remember to include what you'll able to secure the bike to.One thing, I am hope does not become an issue it the plastic slot where the Lock (silver part) slides into. With the jarring it takes its seems that the lock already has more wiggle room than it started with. Will have to see after a few months and years if it holds up.