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Your jackets can do more.
Kumja extends them during pregnancy and while babywearing.

Zipped into your jacket, Kumja keeps your belly and baby reliably warm.

  • fits almost any jacket – we pick the right adapter for you
  • you use what you already have – your jackets.
  • quickly zipped in, quickly out again.
order via the selection assistant
Kumja jacket extender

First over the bump, then over the baby.

While pregnant you set the jacket extension narrow at the top; for babywearing it stays wide.

Every jacket gets its own adapter. There are longer adapters for long coats. If you take turns carrying, one Kumja is enough.

Schwangere Frau mit Kumja in ihrer Jacke Paar mit Kumja: er trägt das Baby und sie ist schwanger Frau steigt mit Baby in der Kumja in die Bahn Frau trägt ihr Baby mit Kumja im langen Mantel

Which adapter? We'll work that out for you.

Kumja isn't sewn on – it zips into your jacket's zip. Because every jacket has a different zip, a slim adapter sits in between.

You don't need to know anything about zips. In the selection assistant you answer a few questions about your jacket, ideally while wearing the jacket (less risk of mixing up left and right). From your answers we work out the right adapter, and it's added to your order automatically.

For each additional jacket you'll only need another adapter later on. Your Kumja stays the same.

If it doesn't fit after all, we'll exchange it free of charge.

Adapter between jacket and Kumja

Order a jacket extender

Step 1 of 2

Choose your model

Decision guide

Kumja One Winterkumja Sunshine Kumja
for cold weather applies applies
for mild weather applies applies
windproof applies
rainproof applies with rain cover (accessory) with rain cover (accessory)
On the go packs small without the filling larger packed size small packed size
Care hand wash with special detergent to protect the impregnation machine wash 40°C machine wash 40°C
more info to the product page to the product page to the product page

Step 2 of 2

Choose color

Accessory: rain cover

Attaches with hook-and-loop and makes the Winterkumja or Sunshine Kumja weatherproof

Decision guide

The side panels are removed and the rain cover is attached with hook-and-loop

To the product page

Now for your jacket

Give it a name here, so if you have several jackets you'll know which adapter belongs to which.

It's best to put the jacket on, so you can answer left/right questions more easily

Which side is the slider on

Important: as seen from your perspective while wearing the jacket

Sliders are the moving parts on the zip

How many sliders are there?

If the zip can also be opened from the bottom, it's 2

A zip made by YKK?

Look at the back of the slider. Do you see the 3 letters "YKK" there

Not YCC or similar

YKK Schieber

What else is printed on it?

What letters and numbers do you find on the back of the slider?

The number and the 1st letter are what matter

YKK Code

What does your zip look like from the front/outside?

Compare carefully.

If it looks different, go back a step and double-check your selection from the previous step

Vislon Slim zip

Unfortunately, there is no adapter for this zipper. You can still use Kumja with the clip adapter or the sew-in adapter.

See alternatives

What does your zip look like from the front/outside?

Compare carefully.

If it looks different, go back a step and double-check your selection from the previous step

Does your metal zip look like this?

Color may vary. Pay attention to the tooth shape.

Metal feels cool to the touch. A similar-looking plastic version doesn't.

Which tooth shape looks like your zip?

Again, pay close attention to the shape.

Photos of your zip

Good lighting and sharp outlines help us.

Tip: place a 1-euro coin next to the row of teeth for size comparison.

Please provide us with both photos.

We'll look at your photos and choose the right adapter. If anything is unclear, we'll get in touch.

How many teeth fit on a euro coin?

This trick helps us estimate the size of your zip.

Place the coin centered behind the zip teeth

Count teeth with a tape measure or ruler

If you don't have a euro coin handy, count the number of teeth over a length of exactly 2 cm.

More information about your jacket

Your details can help us find the right adapter.

Provide as much information as possible

If you'd like to tell us anything else, please use the comment field at the end of checkout.

Your zip length

We don't shorten adapters. They're always 70cm long.

Enter the zip length if you have a long jacket or coat:

What matters is the length of the zip, not the length of the jacket.

Required, so we can warn you in time about long zips.

Closing the coat

Your long coat would be open below the extender. The Plus option brings it together and closes it.

to the product page

That didn't work just now

We couldn't look up your details. That was on us, not on you.

Please try again in a moment.

Test set recommended

Several adapters could work for your jacket.

We'll send these to you as a test set under the following conditions:

  • Return of any adapters you don't need within 14 days
  • We cover the return shipping costs for shipments within Germany
  • You cover the return shipping costs for shipments outside Germany

If you don't want a test set, we'll personally review your details and get back to you.

We have an adapter for your jacket

It's easy to get the details wrong. With photos like the ones in the examples we're on the safe side.

If we need anything else for this, we'll get in touch.

Please provide us with both photos. Please provide us with at least one photo.

We have an adapter for your jacket

Done!

We can name an adapter that will probably fit.

You'll receive the adapter code with the invoice after payment.

Adapter information 5,00 €

Almost done.

Your details have been saved. We'll determine the right adapter and confirm by email.

No match found.

Unfortunately we don't have an adapter for this combination. Go through the selection again and check your details. If you're unsure, you can also send us photos at support@mamamotion.de.

The clip adapter is the alternative. It fits all jackets. Go to the clip adapter

What this is about

  • We no longer display the result of the adapter selection publicly.
  • You can buy the information about which adapter type fits your jacket here.
  • Read up in advance on what your zip length means, and other questions: FAQ about the paid adapter information

You need to agree to this

  • We accept no liability if it doesn't fit, and we don't provide support either, including for problems relating to length.
  • We accept no liability if you entered incorrect details (wrong side, wrong number of teeth, ...).
  • The information cannot be returned, so you waive your right of withdrawal.
  • You'll find the adapter code on the invoice, which you'll receive by email right after payment.
  • If our database can't return a result, you pay nothing and we can't provide you with any information either.

We're sorry!

This is a somewhat special case.

Unfortunately we can't name an adapter for you.

Check whether all your details were correct, or try a different jacket.

The clip adapter is the alternative. It fits all jackets. Go to the clip adapter

Special adapter needed Coat adapter needed

At cm in length you need a special adaptercoat adapter.

They're not easy to find on the second-hand market, which is why we're warning you up front. So it can happen that you know the adapter type but can't find a second-hand adapter that's long enough.

You can buy the adapter from us instead:

Yes, we can credit the fee for the adapter information to your order.

Just add an order comment when you buy the adapter. We'll then refund the corresponding amount.

Condition: you buy the adapter type that was given to you via the adapter information.

Order adapter only

Step 1 of 2

Choose your model

Decision guide

Kumja One Winterkumja Sunshine Kumja
for cold weather applies applies
for mild weather applies applies
windproof applies
rainproof applies with rain cover (accessory) with rain cover (accessory)
On the go packs small without the filling larger packed size small packed size
Care hand wash with special detergent to protect the impregnation machine wash 40°C machine wash 40°C
more info to the product page to the product page to the product page

Step 2 of 2

Choose color

Accessory: rain cover

Attaches with hook-and-loop and makes the Winterkumja or Sunshine Kumja weatherproof

Decision guide

The side panels are removed and the rain cover is attached with hook-and-loop

To the product page

Now for your jacket

Give it a name here, so if you have several jackets you'll know which adapter belongs to which.

It's best to put the jacket on, so you can answer left/right questions more easily

Which side is the slider on

Important: as seen from your perspective while wearing the jacket

Sliders are the moving parts on the zip

How many sliders are there?

If the zip can also be opened from the bottom, it's 2

A zip made by YKK?

Look at the back of the slider. Do you see the 3 letters "YKK" there

Not YCC or similar

YKK Schieber

What else is printed on it?

What letters and numbers do you find on the back of the slider?

The number and the 1st letter are what matter

YKK Code

What does your zip look like from the front/outside?

Compare carefully.

If it looks different, go back a step and double-check your selection from the previous step

Vislon Slim zip

Unfortunately, there is no adapter for this zipper. You can still use Kumja with the clip adapter or the sew-in adapter.

See alternatives

What does your zip look like from the front/outside?

Compare carefully.

If it looks different, go back a step and double-check your selection from the previous step

Does your metal zip look like this?

Color may vary. Pay attention to the tooth shape.

Metal feels cool to the touch. A similar-looking plastic version doesn't.

Which tooth shape looks like your zip?

Again, pay close attention to the shape.

Photos of your zip

Good lighting and sharp outlines help us.

Tip: place a 1-euro coin next to the row of teeth for size comparison.

Please provide us with both photos.

We'll look at your photos and choose the right adapter. If anything is unclear, we'll get in touch.

How many teeth fit on a euro coin?

This trick helps us estimate the size of your zip.

Place the coin centered behind the zip teeth

Count teeth with a tape measure or ruler

If you don't have a euro coin handy, count the number of teeth over a length of exactly 2 cm.

More information about your jacket

Your details can help us find the right adapter.

Provide as much information as possible

If you'd like to tell us anything else, please use the comment field at the end of checkout.

Your zip length

We don't shorten adapters. They're always 70cm long.

Enter the zip length if you have a long jacket or coat:

What matters is the length of the zip, not the length of the jacket.

Required, so we can warn you in time about long zips.

Closing the coat

Your long coat would be open below the extender. The Plus option brings it together and closes it.

to the product page

That didn't work just now

We couldn't look up your details. That was on us, not on you.

Please try again in a moment.

Test set recommended

Several adapters could work for your jacket.

We'll send these to you as a test set under the following conditions:

  • Return of any adapters you don't need within 14 days
  • We cover the return shipping costs for shipments within Germany
  • You cover the return shipping costs for shipments outside Germany

If you don't want a test set, we'll personally review your details and get back to you.

We have an adapter for your jacket

It's easy to get the details wrong. With photos like the ones in the examples we're on the safe side.

If we need anything else for this, we'll get in touch.

Please provide us with both photos. Please provide us with at least one photo.

We have an adapter for your jacket

Done!

We can name an adapter that will probably fit.

You'll receive the adapter code with the invoice after payment.

Adapter information 5,00 €

Almost done.

Your details have been saved. We'll determine the right adapter and confirm by email.

No match found.

Unfortunately we don't have an adapter for this combination. Go through the selection again and check your details. If you're unsure, you can also send us photos at support@mamamotion.de.

The clip adapter is the alternative. It fits all jackets. Go to the clip adapter

What this is about

  • We no longer display the result of the adapter selection publicly.
  • You can buy the information about which adapter type fits your jacket here.
  • Read up in advance on what your zip length means, and other questions: FAQ about the paid adapter information

You need to agree to this

  • We accept no liability if it doesn't fit, and we don't provide support either, including for problems relating to length.
  • We accept no liability if you entered incorrect details (wrong side, wrong number of teeth, ...).
  • The information cannot be returned, so you waive your right of withdrawal.
  • You'll find the adapter code on the invoice, which you'll receive by email right after payment.
  • If our database can't return a result, you pay nothing and we can't provide you with any information either.

We're sorry!

This is a somewhat special case.

Unfortunately we can't name an adapter for you.

Check whether all your details were correct, or try a different jacket.

The clip adapter is the alternative. It fits all jackets. Go to the clip adapter

Special adapter needed Coat adapter needed

At cm in length you need a special adaptercoat adapter.

They're not easy to find on the second-hand market, which is why we're warning you up front. So it can happen that you know the adapter type but can't find a second-hand adapter that's long enough.

You can buy the adapter from us instead:

Yes, we can credit the fee for the adapter information to your order.

Just add an order comment when you buy the adapter. We'll then refund the corresponding amount.

Condition: you buy the adapter type that was given to you via the adapter information.

What parents say about Kumja

„Nach vier Jahren mit zwei Tragekindern würden wir die Jackenerweiterung jederzeit wieder kaufen. Die Idee mit den Reißverschlussadaptern ist genial und der Support ist super."
— Miep · Jeden Cent wert!
„Solide verarbeitet und macht was es soll. Besonders klasse sind die verschiedenen Adapter und der super Kundenservice! Zusammen findet man den passenden Adapter für die Jacke."
— Felix · Gutes Produkt, guter Service
„Ich habe gerade meine Winterkumja an die Winterjacke gemacht. Dank des Videos war es total unkompliziert und der spezielle Adapter passt wie angegossen. Eine tolle Idee!"
— Christina · Sehr gut!
„Nachdem ich ca. 15 verschiedenste Umstands- und Tragejacken bestellt habe, die alle aussahen wie ein Sack Kartoffeln, habe ich die Jackenerweiterung bestellt. Passt perfekt, einfache Montage."
— Nicki · Absolut begeistert
„Ich wollte für die kalten Tage nicht extra eine neue Jacke kaufen, sondern gern meine Jacken weiternutzen. Mit der Kumja ist das zum Glück nun möglich – schnell und einfach befestigt."
— Franziska · Tolle Idee und super im Alltag
„Ich habe auf der Suche nach einer passenden Umstandsjacke schon fast graue Haare bekommen. Durch Zufall bin ich auf die Kumja gestoßen – die Adapter passen perfekt, schnell eingesetzt."
— Ramona · Endlich eine Alternative zur Umstandsjacke
„Wir haben die Winterkumja kurzfristig bestellt (Donnerstag Abend bestellt, Samstag früh geliefert) und sind wirklich begeistert! Die Konfiguration ist absolut übersichtlich."
— Christiane · Geniales Produkt!
„Schon unser erstes Kind habe ich im ersten Jahr viel getragen. Vier Jahre später ist das zweite Kind da, und dank der Reißverschlussadapter passt die neue Winterjacke ganz einfach wieder."
— Tragemama · Nur zu empfehlen!
„Ich war skeptisch, da ich schon von anderen Anbietern enttäuscht war. Heute ist die Kumja angekommen und ich bin einfach nur begeistert. Tolles Material, die Adapter passen in alle Jacken."
— Elsa · Mega toll

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