What is the point of a two-way zipper?

A two-way zipper lets you open your garment and still look cool, all without catching a chill. Berluti

Two Way Zip Guide - How to use a two-way zipper

Riri M4/M6/M8 Two Way Titanium Teeth Metal Black Zipper matte Finish custom Cut to Length

What is the purpose of a double zipper? - Quora

My jacket has two zippers on it. What is the purpose of the bottom zipper/ second zipper on a jacket? - Quora

Do you need a two-way zipper on your hiking jacket?

How to Pick the Right Zippers for Your Project

Editorial

Editorial

Winter Coats – How to Work a Two-Way Zipper

Change a Double Zipper to Close in the Centre {tutorial}

Hauck Hauck Universal Footmuff for Pushchairs St…