The Contigo Thermalock water bottle is a great deal at Costco. With a capacity of 2½ cups, it keeps my cold drinks cold throughout the day and allows me to monitor my fluid intake more easily. This was my first insulated water bottle. Of course, the first thing I did was test whether it could keep cold drinks and hot drinks at a stable temperature. It works so well that I have not grabbed my other uninsulated water bottles at all.
The positives are (1) it’s insulated; (2) the $6.50 per bottle price; and (3) the strap that keeps the cap attached. The design is a bit utilitarian. Not as good looking as the S’well, but also not four times as expensive either.
