Bicycle flasks

Bicycle flasks

— containers, originally "sharpened" for use on bicycles — more precisely, for installation on a special bicycle mount for a flask (most often placed on a frame). Despite the name “flask”, most often they do not have a screw cap, but a valve that allows you to quickly open / close the container and even drink on the go. The volume usually does not exceed 750 mL — a larger container would not fit in the bike rack, and there is no need for large volumes in this case.