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Kumo Medium Backpack

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The perfect combination of style and functionality, the Kumo Backpack keeps you well organized. Its spacious main compartment offers space for your laptop, documents or shopping on the way home. The splash-proof magnetic opening is securely closed with an aluminum buckle. The trolley holder makes this backpack your ultimate companion, allowing you to tackle the day's adventures with ease and style.

The Lotus Infinity Series is crafted from 'PUrTEX∞' - a custom ultra-durable tech material that Ucon Acrobatics developed over several years. It is made from recycled textile waste and finished with a rigid coating of solvent-free polyurethane (PU).

Kumo Medium Backpack
Lotus Infinity Series
Sand

Other Kumo Mediums

Kumo Medium Backpack Kumo Medium Backpack
  • Ready to ship
  • Free EU delivery over 99€
  • Climate neutral shipping
€129,99 Including VAT
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Up to 16 inch MacBook Pro Up to 16" MacBook Pro
Product Size 41 x 33 x 9 cm
Product Capacity 13,5 l
Product Weight 1150 g
Product Material Polyurethane (PU) with polyester from recycled textiles (rPET), solvent-free
  • Custom-developed tech material by Ucon Acrobatics
  • Over 100x more scratch resistance than conventional artificial leather
  • Made from recycled fashion waste
  • Developed with the circular economy in mind
  • Main opening is splash-proof and can be closed with magnets and an aluminum G-buckle
  • Two slide-in compartments on the front
  • Large main compartment suitable for files and folders
  • High-quality interior compartment with built-in shock absorber fits a 16,4" laptop or tablet
  • Two mesh pockets e.g. for cell phone, wallet or cable
  • Elastic bottle holder and keychain inside
  • Adjustable and padded shoulder straps guarantee comfortable fit of the backpack
  • Padded bottom part for more safety and stability
  • Trolley holder on the back
  • Protruding 'Ucon Acrobatics' print

The Lotus Infinity Series is crafted from 'PUrTEX∞' - a custom ultra-durable tech material that Ucon Acrobatics developed over several years. It is made from recycled textile waste and finished with a rigid coating of solvent-free polyurethane (PU).

Manufacturing

  • Made in China by factories that are regularly audited by amfori BSCI
  • Bluesign® system-partnership means we avoid harmful chemicals during production

Materials

'PUrTEX∞' is a custom ultra-durable tech material. Ucon Acrobatics has developed this progressive material over several years - which is second to none. Increased longevity - reduced thickness. Lower ecological footprint and steps into circularity. It is made from recycled textile waste and finished with a rigid coating of solvent-free polyurethane (PU). The PU foam layer has a cross-link structure, so the functional aspects are similar to molded rubber. The high performance has been proven in test results. The surface adhesion strength is four times better and the scratch resistance even improved over 100 times compared to conventional artificial leather. Furthermore, PU making is free of solvents such as DMF and VOC. The CO2e is reduced by over - 50%, the energy is reduced by over -40% and comes mainly from renewable sources. For the base of the material, post-consumer textile waste is transformed into recycled PET yarn in a chemical recycling process. The resource-saving spin dyeing process ("dope dye") is applied even before the interlock fabric is knitted. The savings of this are huge - water consumption is reduced by up to -90%, chemical consumption by up to -80%, energy consumption and CO2e emissions by up to -50%.

Components

  • Main Shell Material: 51% Polyurethane (PU), 49% Polyester (rPET) fiber-to-fiber recycled from post-consumer textile waste, dope-dyed
  • Secondary Shell Material: 54% Polyester (rPET) fiber-to-fiber recycled from pre-consumer/ post-consumer textile waste, dope-dyed, 46% thermoplastic Polyethylene (TPE)
  • Inner Material: 100% Polyester (rPET) fiber-to-fiber recycled from pre-consumer/ post-consumer textile waste, dope-dyed
  • Cushion Material: 100% Polyester (rPET) fiber-to-filler recycled from pre-consumer textile waste
  • Webbing Band: 100% Polyester (rPET) fiber-to-fiber recycled from pre-consumer/ post-consumer textile waste, dope-dyed
  • Metal Hardware: 100% Iron (FE), painted

Sustainability is deeply rooted in our company’s DNA. As a value-driven company, we share common convictions and want to lead the circular economy in our field.

Design Principles

Our design developments focus on durability, as bags and backpacks are meant to be used daily and intensively for years. Minimalist design is also timeless and, in the best case, extends the usage period.

We consider the impact of production with every new product and the entire life cycle. We thoroughly research materials, processes and emerging technologies to understand and reduce the environmental footprint of each product. In the shift from a linear to a circular economy, all components must undergo a review based on the following criteria:

  1. Reduced environmental impact
  2. Longevity
  3. Recyclability

Mono-Material Products

A mono-material is only composed of a single type of material, so it is typically easier to recycle than products made from different things. Also, the higher the material purity, the less energy is needed for depolymerization (chemical recycling). Our goal is to create products from 100% recycled mono-materials from our own industry - in our case PET from textile waste. The following two recycling methods are essential to make products from old textiles.

Fiber-to-Fiber Recycling

This method is a closed-loop process in which used textile fibers are transformed into new fibers to create new textile products, reduce waste, and maximize material reuse. The following two recycling processes are particularly important for manufacturing our products from used textiles.

1. Mechanical Recycling
We use this textile recycling process for industrial textile waste (Pre-consumer). These leftovers from fabric production are mechanically recycled with little energy input. The resulting fibers are shortened, which is why we use them to produce different types of felt. This can be used in soft form as an inner lining or stiff form instead of hard plastic for reinforcement.

2. Depolymerization
We use this textile recycling process for end consumers’ textile waste (Post-consumer). This is mainly workwear, which also contains a high proportion of polyester. These synthetic fibers are broken down into their original chemical building blocks and used to make new synthetic fibers. Often called chemical recycling, our process is based on saccharification, fermentation and alcoholysis. This process requires more energy and chemicals as mechanical recycling but produces higher-quality recycled fibers for new textiles. 

Fiber-to-Filler Recycling

This method is an open-loop process that uses textile waste from the fashion industry with a high polyester content already dyed. These are mainly scraps from sewing factories, downcycled into thick felt elements with little effort and used in invisible areas of the backpack. Such mixed textiles are hard to recycle and often end up in landfills or get burned.

Dope Dye

Dope dyeing is a process that adds color to fibers before they are spun into yarn. The savings are enormous - water consumption is reduced by up to -90%, chemical consumption by up to -80%, energy consumption and CO2e emissions by up to -50%. UV stability is also significantly better, as is color fastness to rubbing.

  • Dimensions: 41 x 33 x 9 cm
  • Capacity: 13,5 l
  • Laptop compartment: 35 x 31 cm
  • Weight: 1150 g

Enjoy free shipping on all orders over 99€ within the EU. Incoming orders are processed within 24 hours on weekdays and will be dispatched immediately. Our standard shipping within the EU takes a total of 2 to 6 working days, outside the EU shipping takes 8 to 12 working days. When things need to go fast, we also offer an Express option. We ship our parcels with the tariffs 'DHL GoGreen Plus' and 'UPS carbon neutral'. The delivery companies promise to invest in new e-delivery vehicles and compensate the remaining emissions through climate protection projects.

We currently accept payments by Credit Card (Visa, Master Card and Amex), PayPal or Apple Pay.

Sustainable Partners
Certified B Corp Peta Approved Bluesign® System Partner Ecologi Plastic Fischer
Our Awards

Kumo Medium Backpack

€129,99 Including VAT
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Ucon Acrobatics
Kumo Medium Backpack

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Boarding Completed
All products comply with international hand luggage regulations and can be taken into the cabin of any airline.
Minimalist design from Berlin
Our products are designed in Berlin and stand for minimalism, creativity and sustainability.

Lotus Infinity

Ucon Acrobatics
Lotus Infinity

water resistant product
All our outer fabrics are waterproof - however, we classify this product as 'water resistant'. Due to the construction, water can penetrate through the seams in case of heavy and persistent rain. Therefore, we recommend an additional rain cover during such weather.

MINIMAL
DESIGN

Our durable, timeless designs for urban nomads are the result of environmentally friendly and social decisions as well as passion and creativity.

MINIMAL
EMISSION

We want to create the best product possible without causing any unnecessary damage. For this plan to work and for us to be able to inspire and implement environmental solutions, we work with carefully selected associations and partners.

A Change in Material –
A Change for the Climate

Instead of PET bottles from the beverage industry, we now recycle textile waste. A circular economy means that each industry is responsible for its own waste. We aim to use textile waste to the maximum extent possible. In doing so, we want to design them in such a way as to create durable products with low emissions.

Here are the key innovations

1

Largest possible percentage of recycled textiles

2

Extended lifetime

3

Reduced ecological footprint

4

Designed for the circular economy

How would such a ‘innovation’ look like?

Sustainability doesn't always have to look 'eco'. In our case, you can hardly tell the difference. Often they are not visible, because we look where no one looks. Hard plastics and foams are hidden in every backpack sold today. We have found a way to avoid all of that and use textile waste instead.

See how it works - step by step:

Textile
Waste

Rough
Shredded

Fine
Shredded

Felted

Filler

Lotus Infinity Material ‘PUrTEX∞’

None of the materials available on the market completely convinced us. Over a period of several years, we developed our own material, which is second to none. Together with the experts of one of the world's largest manufacturers, we have succeeded in developing a new material with outstanding properties.

The laboratory comparison with commercially available artificial leathers is quite convincing:
FUNCTIONAL IMPROVEMENTS

Tensile strength

+ 50%
+ 100%
+ 400%
+ 1.000%

Tear resistance

Adhesion resistance

Abrasion resistance

Conventional PU material
‘Lotus Infinity’ Material ‘PUrTEX∞’
b-corp
B-Corp use business as a force for good and prioritize people and the planet alongside profit. We have met rigorous standards for social and environmental performance, accountability and transparency.
bluesign
This certification system covers the entire production chain from raw materials to finished products and ensures that chemicals, water, and energy are used responsibly.
peta
Animals are not expendable and must not suffer for our products. We only produce beast-free products and have been recognized as "Best Vegan Backpack" by PETA Vegan Award Fashion 2024.

Ecologi

Together with our gold standard partner Ecologi we planted 25.000 trees in 2022 mainly through the 'Eden Reforestation Project'. With each purchased product in our online shop our customers help to plant one more tree and let our forest grow.

1 Product
=
1 TREE

Plastic
Fischer

Our partner Plastic Fischer is a social enterprise that develops cost-efficient technologies to collect plastic waste from rivers before it can enter the oceans.

With each purchased product in our online shop our customers help Plastic Fischer to remove 1kg of river plastic from rivers in Indonesia.

+
1 Product
=
1 KG RIVER PLASTIC