Where does this come from, and can I check it?

Two sliders meeting in the middle let a jacket open from top or hem. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Two way zips carry a slider at each end

Two sliders meeting in the middle let a jacket open from top or hem The chain is fitted with two sliders facing opposite directions, so one opens downward from the neck and the other upward from the hem. That suits long coats, sleeping bags and luggage where access from either end matters. The sliders pass each other only when the teeth are meshed, which is why the chain must be fully closed before they meet. It sits in Mondo's everyday life collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Encyclopaedia Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

Go further

General Knowledge trivia Technology trivia

More facts like this

YKK on zippers stands for a Japanese manufacturing companyThe world's largest zipper maker uses the initials of its founder's business Garment zippers incorporate spring latches to stay closed securelyPull tab locking pins prevent clothing zips from sliding down under stress A zipper slider is a tapered Y channelThe two rows enter separately and leave interlocked through a narrow throat Coil zippers are made from one spiralled plastic strandA continuous monofilament is wound into a helix and stitched to the tape An invisible zip hides its teeth behind the tapeThe coil sits on the reverse of the tape so only a seam shows when closed The small extra pocket on blue jeans was designed for pocket watchesLevi Strauss added the small front watch pocket to protect pocket timepieces

Tags: zippers, clothing, design

Two way zips carry a slider at each end: the short answers

Where does this come from, and can I check it?: Two sliders meeting in the middle let a jacket open from top or hem. The figure is taken from Encyclopaedia Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.