Diffrient World Drafting Stool

Model HMS-W11ST
(You save $320.80 )
Ships in 30 Days or Less

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A unique chair design by Neils Diffrient. The Diffrient World Drafting Stool is Humanscale's first entry into the 'all-mesh' task seating category. Renowned designer Niels Diffrient wanted to create the most minimal, full-function task chair ever made. Created with the Humanscale, tried and tested, innovative tri-panel mesh backrest that provides custom back and lumbar support, Diffrient World is, like all of Humanscale’s products, simple, beautiful and functional. The design, like other Humanscale seating products eliminates the need for traditional mechanisms, instead using the laws of physics and the sitter’s body weight to create the perfect recline functionality. Diffrient World offers the ultimate user-friendly sitting experience. Available in an all mesh seat version or a version that has a more conventional foam seat pan with a textile overlay. Proudly Made in the USA, this semi-custom chair ships in 20-30 days Free! Interested? Call us at 888-355-4999 or live chat us for your best price!
20% off SALE THROUGH 12/31/20
  • Self-adjusting free recline mechanism
  • Pivoting backrest adapts automatically as you recline for optimum lumbar support
  • User maintains near-constant eye level during recline
  • Adapts to users up to 300 pounds
  • Tri-panel non-stretch mesh back creates bodyfitting contours
  • No external lumbar to adjust or break
  • Pneumatic seat height by recessed under seat push button
  • Adjustable seat slider for best user seat depth
  • Special low-abrasion mesh
  • Frameless front edge eliminates contact stress behind the knees
  • All mesh seat or conventional textile topped foam seat
  • Armless, adjustable or fixed height armrests connect to the backrest and stay with the body during recline
  • White, Black or Gray frames as illustrated below
  • Standard carpet casters or optional soft casters or glides
  • Weight rated up to 300 lbs and certified for 24/7 multi-shift applications with a 15 Year Warranty
  • Proudly Made in The USA
  • Please call or Live Chat us for your very best price!
  • Seat size 21'' W x 16.5'' to 18.75'' D
  • Backrest size 20'' W x 22.5" H
  • Seat Height 19.63"-27.63"
  • Height 40.13'' - 48.13'' H
  • Dual action recline 17° recline, plus 7° backrest tilt Seat and back angle 100° - 124° 

This Humanscale World chair can be configured in a multitude of different options and textiles to match your exact specification. Ships Free from the factory in 10-14 business days or less. OfficeChairs USA can you send you complimentary textile samples or can assist in building this chair to your specifications with a simple email or phone call. OfficeChairs USA is an authorized Humanscale retailer. 

Design Studio Note: We like the fact that the World chair does not have an annoying cross bar that runs across the front of the seat edge if configured in an all mesh seat. The cross bar in under the chair. This is helpful if you are one of those people that tend to 'perch' on the front of their chair! We also like the fact that the chair is light weight, has minimal parts that could fail and is very environmentally friendly. The World chair is a unique design that can be configured with an all mesh seat or a conventional foam seat pan upholstered in one of the many Humanscale fabrics. Nice accent and a little padding never hurts! 

Take a moment to click on the 'Video' tab below to learn more about the Humanscale Diffrient World chair.

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







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


 Download a World Chair factory brocure here



Invisible Recline Mechanism

Diffrient World uses the laws of physics and harnesses the user’s body weight to automatically provide the right amount of recline for every individual, every time. Its groundbreaking mechanism-free recline action leverages two parts of the chair’s frame to provide automatic, balanced support throughout the full range of motion for maximum support.

Responsive Backrest

Diffrient developed the chair’s back using the laws of physics, which eliminates the requirement for a 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.

Sitting on Air

A truly light-weight 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 supports for every sitter.




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 >



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. -