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Humanscale World Chair with White Frame

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Humanscale World Chair


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The World Chair marks Humanscale's first foray into all-mesh task seating. Like its mesh-backed forerunner, Liberty, the World chair's tri-panel backrest hugs the body to provide tailor-made lumbar support, while its mesh seat eliminates contact stress under the thighs. But the World’s major innovation is its mechanism-free recline action, which leverages two parts of the chair’s frame and the laws of physics to provide automatic, balanced support throughout the full range of recline. No chair is more intuitive, creating the ultimate user-friendly sitting experience.

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The first office chair that adjusts without a lever! Intuitive motion follows your body movements to automatically find the ideal angles to optimally support your body.

  • "Virtual Mechanism"; two part frame uses body weight to adjust chair angles
  • Frameless front seat edge eliminates contact stress behind the knees
  • One year warranty on motor and electrical parts
  • Form-sensing mesh creates body-contouring, adjusting lumbar support
  • Details

    Non-stretch, tri-panel mesh back
    Non-stretch mesh seat
    Optional upholstered polyurethane foam seat cushion
    External Frame:
    Injection-molded, structural, integral color glass-filled Nylon 6
    Stored Energy Devices:
    Pneumatic cylinder for adjustable seat height
    Optional Foot Ring:
    Chrome-plated steel
    Self-Adjusting Recline
    Mechanism-free counter-balance recline action automatically provides the right amount of support through the full range of recline motion, regardless of user size and weight
    No tension springs to adjust
    No recline locks to set/release
    During recline, the angle between torso and legs opens up for better body function
    User maintains near-constant eye level during recline
    Pivoting Backrest
    Extra motion of the backrest during recline automatically adjusts to the changing needs of the spine
    Provides additional lumbar support as needed
    Form-Sensing Mesh:
    Tri-panel, non-stretch mesh construction creates body-fitting contours and self-adjusting lumbar support for a customized fit
    No external lumbar devices to adjust, break or lose
    Low-abrasion mesh protects clothing
    Modular for easy replacement and upgrades
    Non-Stretch Mesh Seat:
    Automatically sculpts to match body contours
    Cradles the body in flexible, breathable mesh
    Frameless front edge eliminates contact stress under the thighs
    Standard Cylinder:
    Provides seat height range that accommodates 95% of the population
    Size adjustable to fit 95% of the population
    Form-sensing mesh provides perfect lumbar support—automatically
    Manual adjustments for fit-to-size:
    Seat Height: 5” (127mm) adjustment range
    Seat Depth: 3.5” (89mm) adjustment range
    3” (76mm) standard hard casters
    Seat Depth:
    (from face of lumbar to front of seat) 16.5"– 20" (419mm – 508mm)
    Seat Height:
    (floor to compressed front center of seat cushion)
    16"– 21" (406mm – 533mm) standard
    15.25"– 19" (387mm – 483mm) low cylinder
    17"– 22.25" (432mm – 565mm) tall cylinder
    20.5"– 28.5" (521mm – 724mm) high cylinder
    Seat Width:
    21.1" (536mm)
    Backrest Height:
    23" (584mm)
    Backrest Width:
    19" (483mm)
    Armrest Height:
    (from compressed seat cushion to top of armrest) 9.75" (248mm) fixed
    7.75" – 11" (198mm – 279mm) adjustable
    Armrest Length:
    (from face of lumbar to front of arms) 12.5" (318mm)
    Distance between Armrests:
    19" (483mm)
    36.5" – 41.5" (927mm – 1,054mm) standard
    32.75" – 39.5" (908mm – 1,003mm) low cylinder
    37.5" – 42.75" (953mm – 1,086mm) tall cylinder
    41" – 49" (1,041mm – 1,245mm) high cylinder
    Base Diameter - 24" (610mm)
    Chair Width - 26" (660mm)