Knoll 'Life' office chair in a sage/green mesh and matt aluminum base. I've had this as well as an Aeron and a Herman Miller Mirra and this has been my personal favourite of the three.

https://www.knoll-int.com/office/products/by-designer/formway-design/life-chair

"With intuitive adjustments, a slim silhouette and broad colour and finish palette, Life sets the standard for ergonomics and innovative design. The advanced control automatically adjusts to the weight of the body, providing personalised and effortless ergonomic support. Rated as a high quality sustainable product, Life exemplifies our steadfast commitment to the environment. The Life chair complements, rather than dominates. Translucent back fabric and thin profile enable the chair to integrate with any environment. Numerous finish and upholstery options to suit individual environment or personality; available with back fabric in a range colours, grey or aluminium base.

Controls: automated when possible; easy, obvious and labelled.

Synchronised recline with auto-balanced tension.

Seat pan with forward flex: unique cut-out pattern with ribbed understructure provides dynamic movement and structural stability.

Back flex: like the seat, back frame is also a flexible plane that moves with you.

Seat depth with a standard upright tilt lock

Lumbar support: soft, pliable, clear material; spring-loaded.

Arms are height-adjustable. "

Can deliver within the valley for gas money

Text is preferred and cash only please