Onepiece was founded on a lazy Sunday in 2007 by three young Norwegians. In an effort to capture the essence of this carefree day in a single piece of clothing, the brand was born. By sewing together a hoodie with a pair of sweatpants using a giant zipper, we created the Original Onesie; the perfect Sunday uniform. Some said it would look stupid, many believed it wouldn’t last. Today, 15 years later, the Original Onesie is still the core product of our brand and our bestselling style.

Onepiece is the jumpsuit specialist brand. We are a niche casual clothing brand with the world's biggest catalogue of jumpsuits and onesies for men, women, and non-binary people. We’re constantly developing new designs, and timeless pieces for all seasons and (almost) any occasion.


We've always taken pride in the fact that we are different and do not always do what everyone else expects us to. We owe our success to the fact that we never let social norms or rules of fashion stop us from expressing ourselves and being comfortable with who we are.

Our brand stands by the comfort of our products, and the confidence they both inspire. We believe that comfort brings confidence, as it allows you to relax, focus, act and perform. We are a comfort-driven brand, with one universal goal; to create comfortable fashion that inspires confidence, creativity and individuality.

“There are occasions where strict dress code applies. For everything else, there's Onepiece.”