Does the instant zipper work?

The claim is you just snap and zip and your problem is solved. Does the instant Zipper Work?

Does Instant Zipper Really Work? - Does It Really Work?

FixnZip

Instant Zipper - As seen on TV

Features, 1. Fixes any zipper in a flash! Works on most common zipper mishaps including split zipper tracks, broken sliders and up to 3 missing

30Pc Universal Instant Fix Zipper Repair Replacement Zip Slider Teeth Rescue

Instant Zipper - As seen on TV

FixnZip (Medium Black Nickel) - See Size Guide - Universal Zipper Repair Kit for Jackets Luggage Bags - Backpack Zipper Replacement Repair Kit - Instant Zipper Fix - Made in The USA

72 Hr Fast Ship - Sublimated XXL Throw Cushion, 20x20, Invisible Zipper Closure, Removable insert - SU574-2

Zipper broke on winter coat. I don't want to buy a new one unless I absolutely have to. Is this a lost cause or can I save this? : r/ZeroWaste

Zipper Repair Kit, Upgraded Zipper Replacement Slider Kit (99 Pcs), Include Zipper Pull Replacement, Instant Zipper Plier, Easy Install, Zipper Fix Ki

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6/12pcs Universal Instant Zipper Instant Fix Zipper Repair Kit Replacement Zip Slider Design for DIY Sewing (Color : Black, Size : 6pcs) : : Home

How to Fix a Separated Zipper: 11 Steps (with Pictures) - wikiHow

Cheap 6Pcs Zipper Repair Kit Universal Instant Zipper Repair Replacement Zipper

6Pcs Universal Instant Fix Zipper 3 Sizes Repair Kit Replacement Zip Slider Teeth Rescue New Design Zippers For Sewing Clothes