Comments about Sokool 1.5 Liter Insulated Bottle Backpack:

A great price! Nice looking (I got Navy Blue). Comes with a very large water bottle which works well, and when I used my smaller bottle, I could tuck a tangerine(for a snack) on top before closing. Because it doesn't have a flat back (the round bottle shape is against one's back) you might notice it at first, but once the walking begins, I forget I'm wearing it (I recommend wearing a shirt w/sleeves vs. sleeveless)due to the shoulder straps. I put the filled water bottle in the freezer and took it out a bit before going on the hike. Ice cold water, with ice very slowly melting! Refreshing! The material surrounding the bottle really insulates well. Definitely a very good design for taking a hike or longer walk and you want your hands free and nothing around your waist.