Instruct: Classify an Amazon review as either positive or negative.
Query: Make certain you keep it upright

In theory, this bottle should have worked well for me. I drink water all day and have several water bottles. I thought this looked like a good addition to my collection, but it didn't work too well.The bottle is durable, fits well in cup holders, and looks nice. My complaint is that mine leaks from the cap where it screws on. Every time I'd have this bottle in my gym bag, my items would get wet. Thank goodness I only had water in it.I find drinking out of the bottle to be a bit awkward. The blue bite valve on the cap is somewhat similar to a baby bottle nipple only with a larger opening (this is what felt awkward to me and I could barely get water out of it).The bottle works, but just make certain to keep it upright and not lean it on its side or your items might get wet like mine. Hopefully my bottle was just defective and they are not all that way.