A customer from Fort Wayne, IN USA on 5/9/12
This is absolutely the best plastic insulated bottle on the market today, it keeps liquids colder or hotter better then any other plastic insulated bottle.
Complaints about the bottle being too stiff are unfounded, I've been using these bottles for many years and never had any difficulty being able to squeeze the bottle to get liquid out. The bottle is stiffer then a normal bottle because it is a double hull bottle with insulated material between the hulls; and it's jast a tad stiffer then the competitions insulated bottles because it's made better with thicker plastic so it won't split or puncture should it fall like what happen to a competitors I had that I used. So there is a trade off between getting a slightly stiffer bottle and having it last a lot longer, or get a flimsy easy to squeeze bottle that won't last as long.
A bottle with no indentations can and will slide out of a cage if jarred just right, but the indentations on the Polar works great. Sure you may have to rotate the bottle a bit to make sure it's in the cage properly but once you do it once or twice it becomes virtually automatic, it's a extremely minor point not even worth discussing.
These bottles are so well constructed they literally will last years, not a season or two like others.