DESCENTE ALLTERRAIN and BYBORRE present the Mizusawa Down Jacket


This signature jacket, who’s name comes from DESCENTE’s apparel factory, located in the Japanese town formerly known as Mizusawa, was first designed for the 2010 Japanese Olympic team. Now one of their leading styles, the Mizusawa jacket seemed like the perfect garment to introduce the exciting partnership between BYBORRE and DESCENTE ALLTERRAIN.

The On-Pattern 3D™ textile lines the inside of the jacket and was designed to create optimal airflow when worn. The three-dimensionality is a result of how and where the front and back layers attach in combination with the polyester fill yarn. For this liner, blisters have been designed for specific spots throughout the jacket patterns, corresponding to points on the wearer’s back that release the most heat. This specifically designed airflow creates space between the jacket liner and the layer underneath; trapping heat where needed and providing optimal air circulation at targeted spots within the jacket.

 It was crucial that the material used in the liner enhanced this already high performing garment which leads to BYBORRE's choice to use Meryl® Nylon. Meryl® is an industry leading nylon supplier who pushes the boundaries for performance, functionality and sustainability. The Meryl® Hydrogen yarns used in the liner fabric give exceptional breathability, elasticity and soft feel.

This BYBORRE INSIDE textile exemplifies DESCENTE ALLTERAIN's high performing Mizusawa jacket through technical materials, radiant colors and functionality through knit design.


BYBORRE launches the Mizusawa Down jacket in collaboration with DESCENTE ALLTERRAIN. The Mizusawa Down jacket is now available and shipping worldwide via


The Mizusawa Down jacket is available now on and on October 26 on

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Photo credit

Campaign images: Bram Spaan

On-body photography: Victoria Yanchuk (Team BYBORRE)


BYBORRE combines technology and textile expertise to bring a new standard to the industry by unlocking material innovation, sharing its vast experience on circular knitting and making their transparent supply-chain available to all clients. They believe that, without the much-needed transparency, positive change is impossible.

Borre Akkersdijk and Arnoud Haverlag founded BYBORRE in 2015 to realize their ultimate mission to inspire and enable an entire generation of creators to make better and more responsible textiles for everyday products. Together with their international team of 50+ specialists, they took on the responsibility to push the boundaries of the conventional textile industry, make responsible textiles more accessible through material innovation, digital design services, and on-demand production.

The company previously raised €3.2 million in a 2020 series A investment round, funding the accelerated development of on-demand design tool Create™. Create™ has welcomed over 1000+ users and 300+ brands worldwide (2022) including Natuzzi, Herman Miller, Palace Skateboards and Porter Yoshida & Co.

To further expand its platform, BYBORRE introduced Textiles™ in 2022. Textiles is a growing library of ready-to-order textiles created from traceable materials and suitable for a wide range of end-use cases, as opposed to the industry wastefully made to stock production status quo. The quality is primarily driven by choosing materials that support longevity, made with BYBORRE’s signature circular knitting techniques and curated stock of certified yarns.

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