Processing and material let me tend to the three stars. The bottle bag is without insulation and thus just as good as I would put the bottle just like that in his pocket. At the end of the double-sided zipper on both bags is a small flap with Velcro ... due to the seams there and I think also because of the material remains the velcro really closed rarely. But on the bag serves its purpose. And for the price you should certainly not expect a lot more.