Kastel Key Go task chair in black mesh at a workstation desk

Key Go by Kastel, KYG128 version: 2D armrests that adjust, lengthen and wear a soft-touch finish

Kastel
Task chair
Key Go Most Requested Task chair
$ 1,766

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Trade terms for professionals and design studios

Rest a forearm on a KYG128 and the pad beneath it has a soft-touch finish, which is how Kastel names this armrest. It is one of two arms the Italian maker offers on Key Go: a 2D arm that adjusts and also extends, drawn in the technical sheet with a PU pad on top. It comes on this code alone, and only together with black mesh and a seat that slides for depth, so choosing the arm also decides the rest of the build.

Listed with task & ergonomic chairs, Key Go rests on a seat of rigid polypropylene, cushioned in polyurethane foam that holds its shape, below a back frame of reinforced nylon. Seat height travels from 16 1/2 to 20 in on a gas cylinder, seat and back rock as one on the synchro tilt, its stiffness set by a tension regulator, and the lumbar support slides up or down. The chair stands 39 3/8 to 42 7/8 in tall and needs 26 3/4 × 22 1/2 in of floor, the dimensions to work with when an open-plan workspace is laid out.

Read the line-up from the arms down. KYG125 and KYG225 carry adjustable 1D nylon arms, ride on self-locking casters with no rubber tread, and differ only in mesh color: black for the first, light gray for the second. KYG128 stays black and adds the longer-reaching arms, the seat slide and rubber casters that do not lock. A removable seat cover in Jet fabric is available as an add-on. We also roll Key Go up to conference tables, or park one beside a desk for coworkers who stop in. La Mercanti lists on the order which seats get the 2D arms.

Technical information based on data declared by the manufacturer.
  • Type: ergonomic mesh-back task chair, task and ergonomic seating
  • Manufacturer: Kastel, San Vendemiano (Treviso, Italy)
  • Versions: KYG125 black, 1D arms · KYG225 light gray, 1D arms · KYG128 black, 2D arms and seat slide
  • Dimensions: overall height 39 3/8–42 7/8 in · seat height 16 1/2–20 in · footprint 26 3/4 × 22 1/2 in (W × D)
  • Back: reinforced nylon (polypropylene) frame, fire-retardant 3D polyester mesh in black or light gray
  • Seat: rigid polypropylene, non-deforming polyurethane foam, covered in the same 3D fabric
  • Arms: 1D nylon, adjustable, on KYG125 and KYG225; 2D adjustable and extendable with soft-touch finish on KYG128
  • Mechanism: synchro tilt with tension regulator, tilt lock and unlock, pneumatic seat height; seat slide on KYG128; steel body with technopolymer housing and controls
  • Lumbar support: adjustable in height
  • Controls: 1 seat-height lever · 2 tilt lock and release · 3 tension regulator · 4 seat-depth lever (KYG128)
  • Base: black reinforced nylon with swivel casters
  • Casters: self-locking, no rubber tread, on KYG125 and KYG225; rubber, non-locking, on KYG128; add-on 040080, single rubber self-locking caster
  • Seat cover: removable add-on in Jet fabric cat. C, variants 30J, 31J, 32J, 33J; hand wash only, up to 104 °F
  • Standards: Italian Legislative Decree 81/08 · EN 1335-1:2020 type B
  • CAM (Italy): declared for the black upholstery version
  • Shipping: one chair per carton, 8.8 cu ft; 35.3 lb for KYG125 and KYG225, 37.5 lb for KYG128
  • Uses: workstations and open-plan offices; we also place it in conference rooms
  • Origin: Made in Italy
La Mercanti USA Llc — your partner for Italian design and contract supply.
Los Angeles, CA, USA · +1 855 335 8079 · info@lamercanti.us
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FAQ

How tall is Key Go from the floor to the top of the back?

Between 39 3/8 and 42 7/8 in, depending on where the gas cylinder sets the seat. All three codes share that range, since they use the same back and the same mechanism under the seat.

What is the mesh on the back of the chair made of?

A 3D polyester mesh that Kastel declares fire-retardant, in black or light gray depending on the code. It is fitted over a reinforced nylon frame, and the padded seat wears matching 3D fabric, declared fire-retardant as well.

How does the synchro tilt under the Key Go seat work?

The synchro tilt links seat and back so they recline as a pair, and a tension regulator under the seat sets how firmly the back resists. The same mechanism also handles seat height and has a control that locks or frees the tilt.

Does Key Go come with an adjustable lumbar support?

Yes. Every Key Go carries a height-adjustable lumbar support behind the mesh, so it can be moved up or down to meet the person sitting. It comes standard on all three codes, with no separate part to order.

Can Key Go work as a conference room chair too?

Yes, and we use it that way: there is one back height, so a meeting room and the workstations around it can share the same chair. La Mercanti often places Key Go at conference tables when a client wants one model across the whole floor.

Ordering Key Go by code, starting from the arms

Key Go comes as KYG125, KYG225 or KYG128. Five steps to write an order line that pins down arms, mesh color, casters and the optional seat cover.

Key Go: pick the arm first

Decide between the adjustable 1D nylon arm and the 2D arm. The 2D arm exists only on the KYG128, so choosing it fixes the code before anything else is considered.

Then the mesh color

With 1D arms, color picks the code: KYG125 is black mesh and black seat fabric, KYG225 is light gray. With 2D arms the chair is black, because KYG128 comes in black only.

Check the seat slide

KYG128 also has a seat that slides to set its depth, worked by lever 4. KYG125 and KYG225 do not have it; if the person sitting wants depth control, KYG128 is the code to write.

Note the casters

KYG125 and KYG225 roll on self-locking casters with no rubber tread; KYG128 rolls on rubber casters that do not lock. A single rubber self-locking caster is sold separately as code 040080.

Add the seat cover if needed

The removable seat cover is a separate line in Jet fabric, category C, in four variants: KYG30J, KYG31J, KYG32J and KYG33J. Write the variant code next to the chair code.