Discover the closest thing to sitting on air. Humanscale’s first foray into all-mesh task seating, innovative backrest provides custom lumbar support for every sitter at any stage of recline. It is accomplished by replacing traditional bulky mechanisms with the laws of physics and the sitter’s body weight. As a result, all the sitter needs to do is sit down to enjoy the ultimate sitting experience.

Niels Diffrient designed Diffrient World to offer ease of use and effortless functionality. With weight-sensitive recline that adjusts automatically and armrests that are attached to the back of the chair, so they move with the user for ergonomic comfort, Diffrient World provides custom comfort for every sitter. A high quality, affordable task chair with minimal parts, Diffrient World was built with longevity in mind and will look as good in ten years as it does today.

Beautiful !. Elaine. Ponte Vedra, FL. Wed Feb 26 2020

A world-class ergonomic task chair with minimalist charms, Liberty projects versatility in both style and function. A form-sensing mesh back supports your unique pressure points while encouraging freedom of movement.

Diffrient World delivers all-mesh elegance, merging premium lumbar care with adaptability. Niels Diffrient’s full-function ergonomic task chair looks at home in any modern office and offers customized back support through a physics-powered design and tri-panel mesh.

Have 5 of these in a home office and have been very pleased. They get heavily abused by kids and have held up very well. Also very comfortable!. Steven. Boston, MA. Mon Mar 24 2025

Zody is designed to accommodate a sitting position and a "perch" position when your standing desk is raised. This adjustment supports the in-between posture that is half sitting, and half standing, and it is the only chair in North America to offer it. Built with over 20 years of independent field studies and knowledge, it is the most researched chair on the market. The exclusive asymmetrical lumbar support mimics the anatomy of your spine and lets you fine-tune comfort on either side. And it is not only good for your body. It is good for the planet, too. This is the first office chair ever to be Cradle to Cradle Bronze certified — the most rigorous environmental standard for products that can be fully reused after their first life. It’s also Greengurad Gold certified and independently tested to be free from over 10,000 chemicals to help contribute to cleaner air in your home.

There was no instruction how to use. Barbara. Sarasota, FL. Sun Oct 08 2023

The Freedom task chair revolutionizes the way people sit. With its weight-sensitive recline and synchronously adjustable armrests, it set new standards for task chair performance and functionality. With a sculpted foam backrest to match the contours of the human body and thick cushions for long lasting comfort, it provides a custom ergonomic fit for every user.