Our sustainable materials

When it comes to the raw materials for our Sperlings, we use sustainable natural materials for which neither humans nor animals or the environment are harmed. The characteristic element of our products is always natural cork, which, depending on the model, is combined with organic cotton. All zippers and buckles are made of metal. On the one hand, they are therefore much more durable, and, on the other hand, they have a better environmental balance than, for example, plastic components.


Cork – vegan leather

Features at a glance

Water repellent
Cork does not let water through. This property also prevents optical aging.

Robust, tear and abrasion resistant
Our cork fabric is extremely robust and tear-resistant. It doesn’t mind friction either.

You can easily wash off dirt with a damp cloth.

Light as a feather
50% of the volume of cork is air. That makes it the perfect material for bags.

Thanks to its cell structure, our cork cannot break and is flexible.


Cork lets liquid escape to the outside. This counteracts sweating when worn.



A combination of style and sustainability – it’s simple!

Far from the image as a bottle stopper, we give cork a new task. Processed into a soft,

luxurious material, it becomes the perfect companion for your lifestyle on every Sperling.


Generally, cork is the bark of a cork oak.
Thanks to the prevailing climatic conditions, these special trees grow particularly in the southern regions of Europe. We found our partner in Portugal, where around 50% of all worldwide cork products are made. The cork trees are grown under sustainable conditions, so that the forests that emerge have a significant responsibility as the home of many, sometimes endangered, species. Even if not known of thought of by many people, the cork oak forests offer significantly better conditions for biodiversity than is the case with eucalyptus.

Schlüsselmäppchen Münzfach


A cork tree is peeled for the first time at the age of around 40. The bark is cut off without damaging the oak.
During its lifespan of over 200 years, a cork oak can be harvested around 15 times using a technique based on traditional manual work. During the annual harvest from May to August, around 340,000 tons of the natural raw material are mined in the worldwide cork forests.

Korkeiche Portugal
Geschälte Korkeiche


Cork is often associated with pin boards or floors. However, the cork that decorates your sparrow is neither fragile nor porous, but a soft and flexible material. Both types of cork come from the bark of the cork oak, but only a particularly high-quality layer is suitable for our cork bags. To obtain a textile material that can be processed by us, the large plates of the harvested cork bark are put together and arranged on a carrier. This removes thin layers that look and feel like leather, hence the name “cork leather”, but are ecologically harmless!

We have been awarded the {APPROVED VEGAN} certificate by PETA and would like to distribute cork as a leather alternative.

With cork against climate change

The worldwide cork oaks bind over 14 million tons of CO2 every year. That corresponds to the annual emissions of almost six million cars.
The ability to store these gases is greatest in the growth phase of the tree. Therefore, a tree that has just been peeled and is building up its new bark can bind up to five times more CO2 than an unpeeled oak.

With the purchase of your sparrow you give the Portuguese companies the opportunity to care for and reforest the forests and therefore make an active contribution to climate protection.


For your trips you need a companion who is as unique as you are. Each piece of cork has its own pattern, its own character.

Nature is unique. Show you are unique too!

Let a unique piece of nature become your companion now:

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