The LEAF 503-SYA is an ergonomic office chair designed for corporate offices, coworking spaces, and educational institutions. It features a height-adjustable swivel mechanism, an upholstered seat, and a mesh backrest with a height-adjustable frame. The chair's black nylon backrest frame and 5-star base, along with black castors suitable for carpets, ensure durability and mobility. The SYA synchronous mechanism offers auto preset resistance with fine adjustment through a rotary selector, providing five locking positions. The LEAF series is known for its elegant, subtly rounded shapes, with the backrest resembling a tree leaf, particularly in the mesh version. This chair is part of a versatile collection that includes modern office desks and collaborative workspace furniture, offering modular workstation solutions that prioritize functionality, ergonomics, and design.