Onepiece
Onepiece is a Norwegian fashion brand best known for popularizing the adult-sized all-in-one jumpsuit. The company specializes in leisurewear and loungewear, distributing its products globally through its online store and select retail partners.
Brand Identity Data
HQ Country
Norway
HQ City
Oslo
Founded
2009
EU Headquartered
Yes
EU Manufactured
No
Stock Exchange
Private
Repair / Recycling
No
Ethical Certifications
None verified
Verified on July 22, 2026