Humanscale Diffrient Smart Chair


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Diffrient Smart is an exceptional executive style mesh ergonomic work chair that is a striking addition to any modern office thanks to its linear and geometric design. With a unique U-shaped back and minimal lines, this ergonomic work chair model from Humanscale also features arm rests that are attached to the back of the chair, so they move with the user for dynamic and constant support. This Humanscale chair's revolutionary tri-panel mesh back offers instant support and allows the user to engage in a healthy and supportive posture. Its unique tri-panel back is designed like a fitted shirt and is built to support your back throughout the recline process. This Humanscale chair is proudly Made in the USA. 

  • Injection molded structural integral color plastics
  • Die-cast aluminum frame with powder coating (will not scratch)
  • Intelligent counter balance recline mechanism adjusts to the users weight
  • Pivoting backrest provides additional lumbar as needed
  • Form sensing tri-panel mesh back creates body fitting contours
  • Low abrasion back mesh
  • Armless, fixed or adjustable height arms including a height & width adjustable 4D (4-way) design
  • Carefully sculpted seat cushions provide an increased contact area to reduce common pressure points
  • Standard 5" seat height cylinder provides adequate seat height for 95% of sitters
  • Special short, tall and foot ring equipped cylinders are optional
  • Protective stainless steel caps on a five-star base
  • Standard carpet casters or optional soft casters for hard floor surfaces
  • Special 'box-stitch' detailing on leather seats (n/a on standard textiles and Ultraleathers)
  • Made in the USA
  • 300 lb. weight rated
  • 24-7 Multi-shift certified


NEW Chrome-Free Leathers- Humanscale is committed to using materials and manufacturing processes that are safe and sustainable. Their leathers are ‘alternatively tanned’ by Wollsdorf Leather – a carbon neutral tannery using synthetic vegetable tanning free from heavy metals. Most traditional processes use chromium, a harmful chemical to the environment and to you! The result is a premium leather that exceeds industry standards in performance and durability.

Box Stitching on Leather - Humanscale will use a contrasting or matching thread as illustrated above when they build your chair using one of their premium grade leathers. Customers go both ways on this option. Some like the contrasting colors while others prefer the more subdued and monochromatic stitch pattern. (Choose one of these combinations in the dropdown menu IF you choose leather for your chair)

On Ticino Leather:


On Corvara Leather:


Back Mesh Patterns & Colors (For seat textiles please click on the green 'Fabric Selector' button above)


Catena features a pure, clean weave—free of any additional patterns or motifs—in colors inspired by the rich hues of spices,  which allow the chair to seamlessly integrate into its setting. It’s simple aesthetic makes it a classic design choice for modern and contemporary environments.


Silver Check This brilliant weave of monofilament strands and silver-coated yarns offers resiliency and 
durability. The award-winning mesh textile was designed to provide optimal ergonomic 
support and comfort by melding strength and flexibility. Like Humanscale's other meshes, 
Silver Check has a low abrasion factor and is extremely gentle on clothing.
74% Polyester, 26% Nylon

Monofilament Stripe

This award-winning mesh textile was designed to provide optimal ergonomic support and comfort

by melding strength, flexibility and resiliency. Using only monofilament yarns that are thin and strong, 
a simple but classic stripe pattern is achieved through weave structure and yarn placement. This 
pattern has slight elasticity, but terrific memory.
 82% Polyester, 18% Nylon


Dash-one of the latest mesh innovations from Elizabeth Whelan Design-was inspired by the
way in which the color appears and then disappears, creating a colored "dash" across the fabric
surface. Dash combines a variety of elements to be as strong, lightweight and responsive as 
possible. With a distinct pattern and small scale, Dash carries color brilliantly and densely for a
beautiful result.
 87% Polyester, 11% Nylon, 2% Acrylic


Pinstripe is a lightweight mesh, that still manages to provide the strength and support of a much 

heavier mesh, by using two different monofilament stretch yarns to provide firmness and excellent
recovery of the fabric. Only the pinstripe yarns take the dye, and the monofilament yarns are 
grey instead of black, giving a more neutral background to the pattern and allowing light to pass
through the fabric.
 82% Polyester, 18% Nylon



We are an authorized Humanscale retailer. For special pricing requests, information or samples on this or any other Humanscale product please contact us directly.


A deep appreciation for ergonomics is at the core of Humanscale.

Ergonomics is the study of how to improve efficiency and comfort in a work place. Correct ergonomic design helps to reduce discomfort at work, which increases job satisfaction, productivity and well-being – and reduces costs to the organization in the long run.  

All of Humanscale’s work tools were created to be intuitive and adjust effortlessly to the user. We consult with our team of in-house ergonomists on every project to ensure our products are the most comfortable available.



Create Environmentally Friendly Spaces with Humanscale

Humanscale is passionate about helping you design projects with minimal environmental impact. 

Humanscale offers options for customers to “close the loop” and dispose of products in the most responsible way possible. Rather than sending them to landfills, we would like to make it easier for our customers to repurpose their products. 

Download more information on this program >

Overall Dimensions:
26.5" W x 16.25”– 18.75”D x 39” - 43.25”H
Seat Width:
Seat Depth:
16.25”– 18.75”
Seat Height with Standard Cylinder:
16.5” - 20.75”
Seat Height with Low Cylinder:
14.875” - 17.875”
Seat Height with Tall Cylinder:
17.625” - 22.625”
Seat Height with High Cylinder:
20.75” - 28.25”
Backrest Width:
Backrest Height:
Distance Between Arms:
Armrest Height:
5” – 9.6”
Base Diameter:
All other seating and products detailed in a current Humanscale Price Guide, unless otherwise specified 15 Years, 24/7 Warranty All other products NOT detailed in a current Humanscale Price Guide Varies; consult your Humanscale representative for details *The warranty on the Float Table only applies to the Float Table Base and only if used with a TableTop purchased from Humanscale. Modifying or tampering with any part of the Base will render the warranty void. ** Note: Ballo is not a task chair. It has not passed the BIFMA or European EN standards for office seating. The Ballo in an exercise chair that is designed for dynamic seating and frequent movement. All Ballo instructions should be followed to ensure a comfortable experience. These warranties are available to the original end-user customer only and are non-transferable. For these warranties to be valid, the Humanscale product must have been purchased directly from Humanscale and/or an authorized dealership, distributor, retailer and/or reseller of Humanscale products. If products are procured through an authorized dealership, distributor, retailer and/or reseller, the end-user customer must be registered with Humanscale for the warranty to be in effect. Humanscale warrants that, at the time of customer’s receipt, the product will be in good working order and will be free from defects in materials and workmanship for the duration of the warranty term, as set forth above. These warranties do not apply to normal wear and tear or damage caused by accident, neglect, product abuse, misuse and/or failure to follow instructions relating to the product’s installation or intended use. Humanscale will not be responsible for damage due to service, maintenance, modifications or tampering by anyone other than a Humanscale authorized representative. Humanscale will not be responsible for injury or damage caused by or associated with the installation and/or use of products in any manner other than in strict conformance with the instructions set forth in its installation manuals and instruction sheets and/or product literature. These warranties do not cover damage caused by a carrier or transportation of the product from one location to another, or alterations made by owner. Humanscale does not warrant damages or defects to the products under the following conditions: an Act of God, damage from electrical power problems, usage of parts or components not supplied by Humanscale, failure to perform preventative maintenance, or damage caused by peripherals not supplied by Humanscale. In the event a product or product part is defective in material or workmanship during the warranty period, and Humanscale receives written notice of the defect within the warranty period, Humanscale will determine with customer if the defect is covered under warranty. Humanscale, at its option, may repair or replace the defective product or product part determined to be under warranty with the same or comparable product or product part as determined by Humanscale, at customer’s location or at a designated Humanscale location. The labor costs associated with the repair of the product or product part may be the responsibility of Humanscale if the product or product part is determined to be under warranty. Humanscale must pre-approve the labor costs prior to the repair or replacement of warranty products or product parts. Customer must contact Humanscale to obtain a Return Authorization through the Humanscale Customer Service Department. Performance of any repair or replacement does not renew or extend the warranty period. If, after examining and testing a returned product or product part, Humanscale determines that the product or product part is not defective, Humanscale will notify customer and return the product or product part to customer. Customer will be responsible for the freight charges associated with the return of non-defective products or product parts. To return a product or product part for repair that is not covered by warranty, Customer must request a Return Authorization through the Humanscale Customer Service Department. Customer will bear the costs of labor and freight charges associated with non-warranty repair. Customer will be charged a standard repair fee, specific to the product, for any product that is repaired outside of the warranty period. Repairs on products out of warranty also carry a 90-day warranty, effective the day that Customer receives the repaired product or product part. For products that are not covered under warranty: Customer may upgrade to a newer, functionally equivalent product at the list price; the product or product part will be returned to Customer; or Customer can request in writing that Humanscale dispose of the product or product part for Customer, in which case a fee may apply as designated by local law. DISCLAIMER THIS LIMITED WARRANTY IS IN LIEU OF ALL OTHER REPRESENTATIONS, WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED REPRESENTATIONS, WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, NON-INTERFERENCE, AND ALL OTHER WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE. Humanscale does not warrant that customer’s use of the Humanscale product will be uninterrupted or error free. Any implied warranties that may be imposed by law are limited in duration to the Limited Warranty period, to the greatest extent allowed by law. Some states or countries do not allow a limitation on how long an implied warranty lasts or the exclusion or limitation of incidental or consequential damages for consumer products. In such states or countries, some exclusions or limitations of this Limited Warranty may not apply. This Limited Warranty is subject to change without notification. -