Oqonos Cherg 021 Ergonomic Office Chair with Self-Balancing Mechanism, 4D Armrests, Sliding Seat and Silicone Castors - Black

The Cherg 021 is designed for those who want to sit down and forget about adjustments. Its self-balancing mechanism detects the weight of the user and adapts the recline tension automatically, with no need to turn any knob or search for the right position. The seat uses foam with a honeycomb structure that delivers a highly elastic feel from the very first moment, maintaining firm support without sacrificing comfort. The 4D armrests adjust in height, angle and depth with an extra-wide 110 mm pad that neither moves nor works loose. The high backrest, with a lumbar curve built into its design, is especially suited to taller people. The seat slides (50 mm) to adapt the depth to each user. The 60 mm silicone castors protect any type of floor. BIFMA and EN1335 certified, with REACH certification. Maximum capacity of 150 kg.

Backrest and seat:

• High breathable mesh backrest (polyester + nylon), formaldehyde-free, flame-retardant, REACH certified, resistant to over 100,000 cycles. Integrated lumbar curve. Adjustable recline from 100 ° to 125 ° with locking in 4 positions.

• High-density eco-friendly foam (55 kg/m³, 80 mm thick) with a honeycomb structure. Solid (no internal voids), no plywood, no glues or formaldehyde.

• Seat fabric in 100% polyester, flame-retardant, REACH certified, resistant to 100,000 cycles.

Ergonomics and adjustments:

• Integrated lumbar support (foam + fibreglass-reinforced structure), with a curve adapted to the lumbar area.

• 4D armrests: adjustable in height (70 mm), angle (50 °) and depth (45 mm). Extra-wide 110 mm padded cushion.

• Sliding seat (50 mm) to adjust the depth to your height.

• Synchronised self-balancing aluminium mechanism. 4 locking positions.

• Class 4 gas piston with 99.7% nitrogen purity, 2.5 mm reinforced wall and a nitrided inner core that doubles its hardness to prevent long-term wobble.

Structure and durability:

• Reinforced nylon base of 350 mm with certified static load of 1,136 kg (BIFMA standard).

• Dual silicone 60 mm castors, quiet and suitable for all types of flooring.

• Maximum capacity: 150 kg.

Dimensions:

• Seat height: 460-560 mm

Width: 520 mm

Depth: 390-445 mm

• Backrest height: 620 mm

Total height: 1165-1355 mm

• Total width: 680 mm

Total depth: 640 mm

• Armrest height from floor: 595-695 mm