We can no longer imagine life without the zip fastener. For a long time now, this brilliant invention has not just been used for its extremely practical fastening function. Designers often use the zip to add the final finishing touch to their new product. And the manduca cannot manage without one either – after all, the zip is the basis of the integrated back extension and our trendy ZipIns.

But do you know how long the zip has actually been in existence? And that it really can be worth counting its teeth? Because the number of teeth is significant for our manduca ZipIns in particular … but more of that later …

manduca back extension

The zip fastener – a simply ingenious invention (just like the manduca back extension)

The zip: who invented it?

The history of the zip fastener goes back to the 19th century. In August 1893, the American Whitcomb L. Judson had his “clasp-locker” patented and presented it at Chicago World’s Fair in the same year. His idea was ingenious but the fastener was not yet perfect. Then Sundbäck – a Swede who had emigrated to America and was the son-in-law of Judson’s partner (!) – picked up his invention and developed it further until he had created a zip fastener for clothes in 1909 and designed a small lighter version for the US Army. The Army then began using this invention for their uniforms. This was the foundation of the zip fastener’s success.

Totting up the teeth pays dividends!

Normally one single zip fastener is enough to open and close parts of a piece of material. The teeth of the zip fastener interlock and are released again with the help of a slider. But when a double zip fastening is required for a 3-in-1 functional jacket with a removable fleece lining for example, then things start getting a bit more complicated. Because here the teeth of two different zip fasteners come together and need to be perfectly aligned. The interesting thing here is that it does not depend on the length of the zip fasteners and that normal zip fasteners of the same length do not necessarily have to fit. What is more important for perfect alignment is the number of teeth.

manduca ZipIn

Zipping is fun!


We discovered this when we launched our first ZipIns on the market. For example, there were small differences in the lengths of some combinations of these first ZipIns and some manduca baby carriers. We found out that the zip fastener industry had designed special zips for these special cases with a defined number of teeth which despite being a little more expensive ensured a 100% accurate fit. We naturally switched our production over to these higher quality zip fasteners as quickly as possible and now only use zip fasteners for our ZipIns that interlock precisely so that everything fits together well.

Bags, pencil cases, worry eaters: are all real hits thanks to the zip fastener!

There are no limits to the imagination when it comes to uses for zip fasteners. On clothes, jewellery or electronic articles – zip fasteners are simply everywhere. My hit list of the three funniest possible uses:

  1. 1. pencil case consisting only of zip fasteners (sewing instructions for the talented but they are also on sale ready-made for the sewing phobics amongst us ;-))
  2. 2. Little worry eaters (sewing instructions – but they can also be purchased)
  3. 3. Coconut bag (you can even buy these ready-made!!)


Coconut bag

You simply have to have a coconut bag – don’t you? © gavran333 – Fotolia.com


The list could go on and on. And last but not least, there is also a manduca accessory that only exists because the zip fastener is so ingenious: the manduca ZipIn to liven up the manduca back extension in whatever way you fancy with whatever bright colours appeal (such as the new ZipIn Circadelic) or in matching shades. Even if the ZipIn has absolutely no function, we simply had to offer you this product because zipping is so much fun! You can brighten up and personalise your manduca at very little expense with our ZipIns – give it a try!

manduca navy with ZipIn CircadelicSea

manduca navy with ZipIn CircadelicSea