Oqonos Cherg 026 Ergonomic Office Chair with Height and Depth Adjustable Lumbar Support, 4D Armrests, Class 4 Gas Piston

The Cherg 026 brings together, in a compact format, the features that have the greatest impact on everyday comfort: the most complete lumbar support in the whole range, adjustable in both height and depth to suit any type of back; armrests adjustable in 4 directions (height, angle and depth) that accompany every working posture; and a Class 4 gas piston with a nitrided inner core that doubles its hardness and ensures long-term stability. The breathable mesh backrest keeps your back ventilated, and the high-density eco-friendly foam seat keeps its shape with use. The 60 mm silicone wheels roll silently without damaging the floor. BIFMA and EN1335 certified, with REACH certification. Maximum capacity of 150 kg.

Backrest and seat:

• Breathable mesh backrest (polyester + nylon), formaldehyde-free, flame-retardant, REACH certified, resistant to more than 100,000 cycles. Adjustable recline from 102° to 123° with position lock.

• High-density eco-friendly foam (55 kg/m³, 57 mm thick), moulded at high temperature with an ergonomic shape that adapts to the user's natural posture. Non-deformable and glue-free. Breathable, crease-resistant elastic seat fabric, resistant to 100,000 cycles.

Ergonomics and adjustments:

• Lumbar support adjustable in height (30 mm) and depth (20 mm).

• 4D armrests: adjustable in height (70 mm), angle (50°) and depth (45 mm). 90 mm padded pad.

• Reinforced steel synchronised mechanism (>3.1 mm). 1 locking position.

• Class 4 gas piston with 2.5 mm reinforced wall and nitrided inner core that doubles its hardness to prevent long-term wobble.

Structure and durability:

• 340 mm reinforced nylon base with certified static load of 1,136 kg (BIFMA standard).

• Dual 60 mm silicone wheels, silent and suitable for all types of floors.

• Maximum capacity: 150 kg.

Dimensions:

• Seat height: 395-495 mm

Width: 510 mm

Depth: 480 mm

• Backrest height: 620 mm

Total height: 1000-1100 mm

• Total width: 630 mm

Total depth: 585 mm

• Armrest height from floor: 580-680 mm