George S.wrote a review of Snow Peak Kanpai Bottle - 10-16.9oz on March 16, 2011
The Snow Peak Kanpai Bottle has worked splendidly. Its kept hot liquids hot or warm for hours. Easy to clean. Well Built.
I haven't used the cold lid to keep a can of beer cold yet, but I'm looking forward to that opportunity this summer!
I should note that the sipping lid does not create a completely water-tight seal. The flip side to this, however, is that the lid's design is very simple and able to be completely disassembled (three parts including the O-ring), allowing for thorough cleaning. A toothbrush works best for cleaning out the nooks and crannies.