Even when the mercury soars, drinking water stays cool in the Polar Bottle insulated sport water bottle. The double wall construction and reflective foil layer form a thermal barrier that effectively insulates. With the Polar Bottle, you can keep liquids cold twice as long versus a standard plastic bottle where liquids lose their cool quickly. Simply fill it with liquid and ice and hit the road or trail.
I have been using the 24oz bottle for 2 weeks now. -- air temps have been in the low 80s -- Water stays cold for about an hour and a half -- Water stays cool for an other hour or so and is does not get as warm as my normal 24oz bottle. This bottle meets and may exceed any reasonable expectations. Bottle is easy to clean, I like that the valve is removable. Not a bad buy - I am happy, and will buy more as I retire aging bottles.
Have used these bottles for years, easy to clean and keeps water cool for a long time. Great product!
There is a market for a better bottle, this one is mediocre.
This has got to be the best bottle ever made to use on a bicycle.