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
Ownership Type
private
Stock Exchange
Private
Tax Domicile
NO
Ultimate Parent
Onepiece AS
Data Hosting
IE
GDPR Status
compliant
Carbon Neutral
false
B Corp Certified
No
Supply Chain
limited
Repair / Recycling
No
Ethical Certifications
None verified
Verified on October 15, 2026
Corporate Lineage
2007
Company Founded
Onepiece was established in Oslo, Norway, by three friends who created the first modern onesie.
2011
Global Expansion
The brand gained significant international popularity, leading to rapid expansion into European and North American markets.