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Black leather office chair with armless design, five-star nylon base and hooded dual-wheel casters

BOSS Office Products

BOSS Office Products B305 Black Posture Chair office furniture

SKU CH-48MF-H4H1X MPN B305

Black LeatherPlus task chair with built-in lumbar support, waterfall-edge seat, pneumatic height and back-depth adjustment on a 25-inch nylon base with hooded dual-wheel casters

  • ColorBlack
  • SpecificationsBack Adjustment: No Arm Type: Armless Mechanism Type: Height
  • LeatherPlus upholstery blends leather and polyurethane for softness and durability
  • Thick padded seat with waterfall edge reduces leg pressure during long sessions
  • Built-in lumbar support and adjustable back depth promote healthy posture
  • Pneumatic gas lift enables quick seat height personalisation
  • Five-star nylon base with hooded double-wheel casters provides stable mobility

Deluxe Posture Chair

The BOSS B305 is an armless task chair upholstered in Black LeatherPlus, a leather and polyurethane blend. It features a thick padded seat with a waterfall edge and a cushioned backrest with built-in lumbar support. The pneumatic gas lift provides seat height adjustment, while the back depth is also adjustable for a personalised fit. A five-star nylon base and hooded double-wheel casters complete the unit.

Build integration

This chair requires no assembly tools beyond those typically included and sits directly on its 25 inch nylon base. The armless design frees up lateral space, allowing closer access to desks or work surfaces. The hooded double-wheel casters enable smooth movement across hard floors or low-pile carpet without snagging. Height and back-depth adjustments let each user set their own posture quickly.

Upgrade context

The B305 replaces basic fixed-height stools or unpadded seating that lack lumbar support and depth adjustment. The jump is worth it when daily sitting sessions exceed a few hours and adjustable ergonomics become necessary for comfort. It is not suited for buyers who need armrests, a tilt-lock mechanism, knee-tilt function, or a seat slider for deeper cushion positioning.

Highlights

  • LeatherPlus upholstery blends leather and polyurethane for softness and durability
  • Thick padded seat with waterfall edge reduces leg pressure during long sessions
  • Built-in lumbar support and adjustable back depth promote healthy posture
  • Pneumatic gas lift enables quick seat height personalisation
  • Five-star nylon base with hooded double-wheel casters provides stable mobility

Specifications

BrandBOSS Office Products
ModelB305
ColorBlack
SpecificationsBack Adjustment: No
Arm Type: Armless
Mechanism Type: Height Adjustable
Infinite Lock: No
Knee Tilt: No
Tilt Tension: No
Pneumatic Gas Lift: Yes
Upright Lock: No
Seat Slider: No
Chair Base: Nylon 25 Inch
Casters: Dual Wheel Nylon 2 Inch
Weight Capacity: 275 lb
Shipping weight10.89 kg
Package size610 × 584 × 279 mm

Questions about this item

How does the pneumatic gas lift hold up when the chair is raised and lowered repeatedly throughout the day?

The pneumatic gas lift provides smooth seat height adjustment and is designed for regular daily use in an office environment.

Does the nylon base or the hooded double-wheel casters generate noticeable noise or heat after hours of rolling on hard floors?

The five-star nylon base with hooded double-wheel casters rolls quietly on most surfaces and does not produce heat during normal operation.

Is any assembly required before the chair can be used, or does it arrive fully assembled?

The chair requires basic assembly of the base, casters, gas lift and seat before first use.

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