The Sweater - Application

In 2015, Goldwin began a joint research and development project with biomaterial innovator, Spiber aimed at the realization of sustainable manufacturing responding to the changes of the times.

We are now announing the latest product of our partnership.

Called simply The Sweater, it is the world’s first knitted garment made with Brewed Protein™️, a biopolymer whose plant-based microbial fermentation process makes it well-positioned to deliver significant contributions to animal- and plastic-free initiatives in a range of fields and industries.

Please submit your purchase application from this page.

If you have trouble viewing the application form, please send your application via e-mail us at with your name, size, and your shipping address.

Application Period

Application Period: November 10th, 2:00 AM ~ November 30th, 6:00AM (CET)
Please note that there will be no cancellation after November 30th, 6:00AM (CET)
In case of high number of applications, there will be a fair drawing to pick winners.
Customer Service for Purchase Application:

Result Notification

Notification of application / lottery result: December 3rd ~ December 10th, 2020
The Result Notification will be emailed to all applicants during this period regardless of the status of winning or losing.
This Result Notification will officially confirm your order.

Delivery Period

Shipping will begin from December 25th, 2020
>※Please be informed that shipping period may change. We appreciate your understanding on this.


The Sweater

Price: €800.00
Color: Black   Size: S / M / L
Fabric: 70% wool, 30% protein (Brewed Protein™)
Country of Origin: Japan

Produced from plant-derived biomass using a fermentation process, the Brewed Protein™ materials featured in The Sweater are the result of Spiber’s research into the creation of biopolymer materials capable of mimicking the properties found in natural spider silk.

By combining these innovative new materials with fine merino wool and high-grade cashmere, it is our hope that The Sweater can serve as a starting point in our search for solutions to global environment problems. The Sweater’s color, black, was chosen because it represents the mixing of all colors and is said to be the color of beginnings. In this way, we envision The Sweater as connecting the beginning of this iconic item’s long history with the latest in technological developments.

Size Charts_

  S M L
Center back 63 cm 65 cm 67 cm
Chest width 52 cm 54 cm 56 cm
Shoulders 40 cm 42 cm 43 cm
Sleeve length 59 cm 61 cm 63 cm
Arm hole width 10 cm 10 cm 10 cm