Our Origin
01 Origin

Twenty years ago, a pair of pants changed the way American women dress. Recognizing the need for clothes that felt great and fit perfectly, we developed an innovative stretch fabric that would dramatically improve a pant’s performance. These pants had the power to make women feel confident, smart, and stylish. Never before had American sportswear been so easy to wear to work and everywhere else.

When Theory for men was established, similar foundation principles were used, so that they, too, could get dressed in innovative, highly functional, and stylish clothes.

Watch award-winning filmmakers Jun Diaz and N + N Films's tribute to our 20-year history, New York City heritage, and vision for the future.


Our clothes create confidence.

We believe cool, expertly tailored pieces made from the best materials have the power to change the way we feel, improve the way we work, and inspire the way we live.

Our Design Philosophy
A Perfect Fit

A Perfect Fit

Every detail is considered and close attention is always paid to the technical elements that enhance how a garment fits and feels. Our commitment to design, fit, and construction ensures exceptional comfort and quality.

The Finest Fabrics

We source our materials from the best mills in the world and test every fabric for its hand-feel, durability, and design.

Enduring Style

Versatile, sophisticated, and easy to wear, our seasonal collections are designed with purpose. Each season is built on smart, essential pieces that lay the foundation for practical, timeless wardrobes.

An Enduring Style
Our Future


Led by the next generation of creative leadership within our company and launched in 2017, the Theory 2.0 collection is an easy-to-wear capsule that addresses a growing demand for essential clothes that are smart, considered, and affordably priced.


Our most environmentally responsible collection to date, Good Wool is made from premium merino wool that is woven at a century-old Italian mill using the latest energy-saving technology. It is mindfully manufactured from start to finish.

Shop Good Wool
Committed to Sustainability
Our Origin

Theory for Good

We collect gently used Theory clothing on behalf of Year-Up, a non-profit devoted to empowering young adults. Customers who donate clothing can exchange it for new items at a reduced price.

Find Your Store


Four times a year, our Be Heard women’s leadership series celebrates the entrepreneurial spirit through conversations with innovators, change-makers, founders, and industry disruptors.

Our Design Philosophy

This Is Our Theory

About Theory