After four years of development and more than fifty prototypes, the EX.01 sports sock marks a new chapter in sustainable performance wear. While all sports socks contain some form of synthetic fibers, we collaborated with Forebel to create the world's first sport sock made entirely without plastic. Combining GOTS-certified organic cotton and FSC-certified natural rubber for a naturally elastic, breathable, and comfortable fit.
The undyed yarns create a soft off-white tone that honors its raw materials and reduces environmental impact. Each section of the sock has been carefully engineered to enhance grip, comfort, and performance, proving that technical function and sustainability can exist side by side.
Produced in Turkey by experienced textile specialists, the EX.01 embodies a mission to move beyond synthetic dependence and redefine what sportswear can be. With every pair, you support a step toward a plastic free future and contribute to SockbySock, an NGO fighting overproduction in the textile industry.
Knit: 94% GOTS certified organic cotton and 6% FSC certified natural rubber.
This product is designed in our headquarters in The Netherlands. We produce our sportswear locally (within Europe), to ensure sustainability, responsible sourcing, and ethical production. This product is produced together with our partner Forebel at their factory in Turkey.
Costs and delivery times
Different delivery costs will apply to different countries. These costs will be provided at the checkout. All orders are shipped from The Netherlands.
Customs charges may apply to orders shipped outside of the European Union (EU). These charges, such as customs duties, taxes, and fees, are determined by your country's customs policies and regulations. Any of these additional costs are the responsibility of the customer.
Exception: For the United States, United Kingdom, Canada, Switzerland, and Norway, all import duties, taxes, and fees are already included in your purchase price. No additional charges will apply upon delivery.
The delivery times can be from 1 to 14 days, depending on the country. After you placed your order, you will get an email with your tracking number and estimated delivery time.
Returns and exchanges
You can register a return within 14 days of delivery through our return portal. All returned items must be in their original, unused condition. Unfortunately, we cannot cover any return costs, these are the customer's responsibility.
For customers in the EU, both exchanges and refunds are available. You can choose to exchange your item or request a refund. Once your return is received and inspected at our warehouse, we will dispatch your exchange or issue your repayment within 14 days.
For customers outside of the EU, exchanges are not supported. If you need a different item or size, please register a return for a refund through our portal, and then place a new order on our website for the item you want. Your refund will be processed within 14 days of your return arriving at our warehouse.