Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good bag but needs improvement

as a mother of a toddler and one on the way, i needed a bag that could hold both of my childrens things. this bag seemed to be it. i like the idea of the three separate compartments. it is roomy enough to hold two sets of diapers, bottles, sippy cups, extra clothes, various lotions, snacks, and still have room for my wallet, keys, and cell, and a few extras. the only reason i gave this bag a four instead of five is that the material that the strap is made out of will not stay put. it keeps falling off of my shoulder. it is very difficult to carry a toddler and hold this bag at the same time.if you like the design of this bag, catini made a very similar one called the trapeze tote which i just purchased today. it is also very roomy, but the material on the straps are better and it stays put very nicely.