Use this all the time.
Great for carrying a 40 oz Klean Kanteen around when commuting via bicycle or other means. Works perfect with a 32 oz nalgene, I bet it was designed for that bottle specifically. It also helps insulate just enough on hot days, didn't expect that because of the dark material. I use it to carry my bike lock sometimes and even a camera lens. Or stuff my gloves into when my pockets are not big enough.. Only reason for 4 stars instead of 5, is I would like to some stronger velcro used, it isn't causing any issues. But I can defiantly appreciate an improvement there.
Mr. McMeowington Meowface
US