Review by: darkbluerabbit, 2006-01-19
The 16 oz size is great. It's big enough to hold a decent amount of fluid, but small enough to be practical. I personally have no trouble fitting ice cubes through the mouth, which is very comfortable to drink from. Cleaning is harder than with a wide mouth, but if you don't gunk it up all you need to do is shake it with soapy water inside.