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Diffrient World Chair


+ Most minimal, lightweight, and full-function task chair ever made.

+ Innovative weight-sensitive, recline mechanism cleverly uses each sitter’s body weight to perfectly adjust the tension and recline position of the chair for full support throughout movement

+ Pivoting backrest automatically moves with the user throughout the day and offers perfect lumbar comfort in all positions without pressure point or need for adjustment

High-performance mesh and textiles complement the chair’s unique cushion contours to maximize their comfort, performance, and ergonomic function

+ Minimal assembly required. 15-year limited warranty on frame, 3-Year warranty on arms, and 5-Year warranty on textiles and mesh materials.

+ Diffrient World is Living Product Certified, meeting the most rigorous sustainable manufacturing criteria to date.

Humanscale meet the highest environmental standards


Diffrient World is Humanscale’s first foray into all-mesh task seating. Designer Niels Diffrient wanted to create the most minimal, full-function task chair ever made. With an innovative tri-panel mesh backrest that provides custom back and lumbar support and a lightweight design, Diffrient World is, like all of Humanscale’s products, simple, beautiful, and functional.

The design eliminates the need for traditional mechanisms, instead of using the laws of physics and the sitter’s body weight to offer the perfect recline for each individual sitter. Diffrient World offers the ultimate user-friendly sitting experience.

A truly lightweight chair, Diffrient World replaces the standard cushion seat with a low-abrasion, non-stretch mesh. To maximize comfort, Diffrient eliminated the front edge of the chair, solving a perennial problem of hard edges placing pressure on the knees and contact stress behind the thighs, allowing long-term comfort and total support for every sitter.

Diffrient developed the chair’s back using the laws of physics, which eliminates the requirement for separate lumbar support, which tends to create a pressure point and requires manual adjustment. With patented Form Sensing Mesh Technology, the backrest perfectly conforms to the sitter’s entire back as if custom made for them.


About the designer

As the pioneer of ergonomics, Niels Diffrient aimed to redefine the concept of the traditional task chair and instead design seating solutions that efficiently adapt to users, allowing them to move freely from posture to posture. Diffrient’s unique approach removed complexities found in other chairs, such as cumbersome recline levers and back tension dials. He realized that movement during recline took the pressure off the user’s body, and transferred it to the back of the chair. As a result, he developed the weight-sensitive, self-locking recline mechanism, definitively reinventing the features of modern task seating to be truly simple, beautiful, and functional.  

Humanscale quickship diffrient world fabrics by PhilZen


Pinstripe, lightweight yet incredibly supportive, ensures the sitter will be correctly supported due to the yarns that have been adjusted to have two different levels of elastic.

Catena, made to last for many years, features a pure, clean weave with a focus on color and fine texture.

Corde 4 is a four-way stretch fabric available in a wide array of shades, provides ultimate ergonomic comfort as it moves with users when they adjust positions. Designed by Elizabeth Whelan. 


Fabric Durability

Humanscale has a steadfast commitment to creating products that will stand the test of time. Developed to endure the constant movement of the sitter, our fabrics feature durable properties that support users of all shapes and sizes. Rigorously tested, our textiles are backed by a robust warranty and guarantee the same, brilliant aesthetic and performance on day 1,000 as on day one.

Fabric Sustainability

At Humanscale, we believe that the well-being of our customers, employees, and planet ranks as more important than our short-term income. Because of this belief, we strive to create products that are free from formaldehyde, PVC, stain-resistant coating, or Chrome 6 in our products.


• Chair Width: 25.75” Arms / 21” Armless

• Base Size: 24”

• Seat Height Range: 14” – 30.75”

• Recline Range: 17° recline + 8° backrest tilt

• Chair Weight: 28 lbs arms / 24 lbs armless

• Weight Capacity: up to 300 lbs

Humanscale Diffrient World dimensions by PhilZen

Quickship models offer:

• Backrest/Seat Textile: in either Pinstripe/Pinstripe, Catena/Catena or 

Monofilament/Corde4 all in Black

• Height Adjustable Duron Arms

• Black frame with black trim

• Foam seat pan

• Standard hard casters

• 5” cylinder

For further details, download the World brochure or the cleaning instructions.

Chair Sustainability

Saving the planet, one product at a time. Like all Humanscale products, the Diffrient World chair was designed with a constant and genuine focus on its environmental impact at every stage of its development. Diffrient World is Living Product Certified, meeting the most rigorous sustainable manufacturing criteria to date. This means that Diffrient World is climate, water, and energy positive. Every time we make these products the planet is better off. With a mission to create a healthier world, we are proud that over 60% of our products are certified net positive. The Diffrient World chair is also GREENGUARD Indoor Air Quality, GREENGUARD Gold, and level® 2 certified. Download the Diffrient World sustainability report.  

Shipping & Returns

The chair ships within 12 business days.

Return Policy

Humanscale accepts no returns on their chairs. 


15-year limited warranty on frame, 3-Year warranty on arms, and 5-Year warranty on textiles and mesh materials.

Freight Claims

Freight Claims must be filed within 2 calendar days from the date of delivery. Pictures of damaged goods and the original cartons are required and must accompany the claim.