Stepping around the tired water-bottles-cause-cancer meme, Nalgene and other wide-mouth bottles are a necessity in the cold, high altitudes of A’stan. Disagree? Try breaking up the ice in your canteen with a knife in the freezing cold and you’ll come around.

A downside of the decades-old design means you’re either jamming your horker on the rim or you’re wishing you had a set of nose plugs to deal with the imminent nasal flash-flood.

The CapCAP from Humangear delivers a comfortable drinking experience while keeping the wide-mouth setup on your bottles. They fit any Nalgene threaded bottle including Camelbak, Cylclone, Stansport bottles. They are about $6 and weigh 1.4 oz.