Humanscale Diffrient Smart Chair
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Diffrient Smart Chair

$899.00 $1,080.00
(You save $181.00)
Smart- S11
Usually ships within 2 to 4 days
Chair Fit:
Chair Fit:
Chair Fit:
Max Weight:
Up to 300 lbs
Choose Options



Ideal for any enviornment, the Diffrient Smart chair is as simple visually as it is functionally. Using Humanscale’s revolutionary Form-Sensing Mesh Technology the chair adjusts to you.Humanscale’s patented weight-sensitive, mechanism-free recline, Smart automatically adjusts to the body weight of each sitter to provide perfect recline support. Further maximizing the ergonomic range of motion, Diffrient Smart’s high-performance armrests allow users to move their arms backward and forward, as well as inward and outward.

Features and Specifications 

  • Distinctive, clean lines that compliment any high design environment
  • Tri-Panel Form-Sensing Mesh Technology provides extraordinary comfort and lumbar support
  • Pivoting backrest promotes freedom of movement
  • Contoured seat cushions are carefully sculpted to fit the body, enhancing comfort
  • Size-adjustable design fits more than 95% of the population - (5’0” Woman to 6’4” (193cm) Man)
  • Optional, high-performance armrests move forward and backward, as well as inward and outward
  • Lightweight structure allows for easy mobility
  • Fewer parts drive sustainable design and efficient manufacturing
  • Weight Limit: 300 lbs. 

Chair Specifications:


a Seat Depth
(from face of lumbar to front of seat)
16" – 19"
b Seat Height
(floor to compressed front center of seat cushion)
16” – 21” standard chair
15.25” – 19” low chair
17” – 22.25”  tall chair
20.5” – 28.5” high cylinder with foot ring
c Seat Width 21.5"
d Backrest Height
(from seat cushion to top of backrest)
e Backrest Width 19"
f Armrest Height
(from compressed seat cushion to top of armrest)
8.75” fixed
6” – 10.5” adjustable
g Armrest Length 12.25" standard
h Distance between Armrests 19" standard
i Height 39.5” – 44.75” standard chair
38.5” – 43.5” low-cylinder chair
40.5” – 46” tall cylinder chair
j Base Diameter 26"
k Chair Width 26.5"

Diffrient Smart Chair Options:

Arm Options:

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Armless [0] Fixed Duron Arms [1] + $80.00 Fixed Duron Arms with Matching Textile [2] + $100 Adjustable Duron Arms [3] + $130.00
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Adjustable Duron Arms with Matching Textile [4] + $150

4D Adjustable Duron Arms [5] + $170.00 4D Adjustable Duron Arms with Matching Textile [6] + $220.00  

Frame Color Options:

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Black Frame with Black Trim [B] Black Frame with Brushed Aluminum Trim [A] + $80.00 Dark Gray Frame with Brushed Aluminum Trim [G] + $80.00

Backrest Mesh Options:

Monofilament Stripe:

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.


Silver Check

This unique translucent pattern is achieved using monofilament and a silver-plated yarn spun with polyester at its core. More than simply an aesthetic choice, the silver-plated yarn gives the textile flexibility and strength.



Designed to resemble embroidery floss, Dash isstronger, more responsive, lighter weight and uses less material than most mesh textiles. It gives the user support, comfort and ease of movement, while meeting Humanscale’s seating requirements.



Designed specifically to work with the Diffrient World Chair, this lightweight fabric provides the strength and support of a much heavier mesh by using two different monofilament stretch yarns to provide proper support.

Black [10] Cadmium [34] Citron [43] Crimson [74]
 Cyan [58]  Graphite [03]  Silver [02] White [01]

Seat Fabric Options:

Smart Chair Upholstered Seat Textiles

More options are available, options below are included in price. Other fabric choices are available for an additional fee. Please contact us if you want an option not listed on our site. Thank You.

Most Humanscale textiles are available in any customer-specified color. Delivery time frames for custom color orders will depend on color approval.



Composed of 100% recycled polyester, Squiggle offers an innovative weave structure to create a modern organic wave pattern resembling ripples of water. This environmentally sound textile may be applied either horizontally or vertically to Humanscale seating.

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Ash [106] Sand [262] Chocolate [208] Expresso [275] Navy [507]