Green Product Award

Green Projects

Green Projects / Fashion

sukui

Carbon-negative medical wear with blockchain DPP

Winner in category Fashion

sukui is carbon-negative medical wear for healthcare professionals, made in Japan from hemp. It solves the need for sustainable, functional scrubs by using a chemical-free spinning method for silk-like softness and a circular design that includes repair and composting. Each garment has a Digital Product Passport (DPP) on blockchain for transparent CO₂ and traceability data. The project received the Good Design Award 2025 (Japan).

Japan-based ”sukui” impresses with its CO2-negative medical workwear, combining modern minimalist design with chemical-free hemp fibers. Each garment features a blockchain-based Digital Product Passport, ensuring full transparency while supporting a circular lifecycle through repairability and final compostability.
Official Jury Statement

Company/Institution
WORKING HASEGAWA Co., Ltd.
WORKING HASEGAWA Co., Ltd. is a Japan-based company founded in 1978 that designs and sells professional uniforms for healthcare and industry. Guided by the concept of “care for people, care for earth,” we launched sukui, a sustainable medical wear brand developed in Fukuoka, Japan. Made from hemp and verified as carbon-negative, sukui integrates a Digital Product Passport (DPP) using blockchain technology to ensure full transparency across its supply chain. Its circular design enables maintenance, collection, and composting, creating a model for sustainable apparel from Japan to the world.
Country
Japan
Website
WORKING HASEGAWA Co., Ltd.
Designer(s)
Shinichi Hasegawa / WORKING HASEGAWA Co., Ltd.
Shinichi Hasegawa is the CEO and creative lead at WORKING HASEGAWA, a workwear manufacturer founded in Fukuoka in 1978. Holding an MBA, he promotes corporate transformation by merging digital technology and sustainability. In 2025, his sustainable medical wear brand “sukui” received the Good Design Award in Japan. Together with blockchain company Chaintope, he developed and implemented a Digital Product Passport (DPP) for sukui, combining Japan’s craftsmanship and advanced technology to present a new global standard of transparency and circular design.
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