Why this straw earns its place
Straw length is a glass decision, not a preference. At 140 mm this is a short straw, cut for tumblers, rocks glasses and the squat glassware that mixers and iced coffees go into — long enough to stand proud of the rim where a guest can find it, short enough that it does not tip out or wave about over the edge. Put a short straw in a tall glass and it drowns; put a long one in a tumbler and it levers itself out of the drink. Bars that get through volume tend to stock by glass shape rather than trying to make one length cover everything.
The 6 mm core is a thin-liquid bore. It draws spirits and mixers, soft drinks, iced coffee and anything else with no body to it, which is the bulk of what crosses a bar. Thick shakes and blended drinks are the exception — those need a wider bore and will simply lock up a 6 mm straw. Black is the colour that keeps working through a shift: it disappears against cola and dark spirits, it does not show what it has been sitting in the way a pale straw does, and it holds the look of a dark-styled bar rather than fighting it.
Paper behaves differently from what it replaced, and the fix is a service habit rather than a product. The clock on a paper straw starts when it hits liquid, so it goes into the glass as the drink goes out, not into a rank of glasses set up ahead of a rush. Storage matters for the same reason — the box stays closed and dry, away from the ice well, the glasswasher steam and the wet end of the back-bar, because a straw that has been drawing damp for a week is soft before it ever reaches a drink. Nothing to wash and nothing to return: it clears with the glass.
