Office Chair Stool Extension

The LiberNovo brand's Leisure Dynamic Ergonomic Computer Chair offers a 48cm extended version, currently the only office chair product with a clearly marked extended size. The following provides an in-depth explanation from three aspects: product features, functional configurations, and alternative solutions.

1. Core Design of the Extended Office Chair
The extended version (48cm) of the LiberNovo Leisure Dynamic Ergonomic Computer Chair primarily extends the seat cushion or the entire cockpit area to accommodate the leg support needs of users of different heights. The design highlight lies in the backrest structure: it employs an 'Adaptive Backrest System for Thousands of Users' composed of 8 flexible modules, achieving dynamic fitting of the back curve through modular zoning. Compared to traditional dual-block structures, it can more precisely distribute spinal pressure, making it particularly suitable for prolonged sitting scenarios. Additionally, the extended version offers two color options, deep black and dark gray, to meet aesthetic needs in office environments.

2. Functional Configurations and Adjustment Ranges
The product controls its core functions through an electrically assisted push rod built into the left armrest:

• Backrest Adjustment: Supports four-level angle adjustment, with a maximum recline angle of 160 degrees, surpassing mainstream high-end ergonomic chairs in China (140-150 degrees) and approaching a flat lying position, suitable for lunch breaks or deep relaxation;
• Massage Function: The backrest can move up and down in a circular motion to relieve back fatigue;
• Charging Convenience: The battery supports C-port charging, compatible with charging cables for most electronic devices, reducing the need for additional accessories.
  The entire chair is shipped ready-to-use, eliminating the need for user assembly and lowering the barrier to use.

3. Alternative Solutions from Other Brands
Currently, no other brands have been found to explicitly mark extended sizes for office chairs, but similar effects can be indirectly achieved through peripheral accessories:

• Desktop Extension Boards: Such as foldable keyboard trays and punch-free expansion brackets available on Alibaba, which can increase leg activity space;
• Seat Cushion Extension Accessories: Some third-party manufacturers offer universal seat cushion extenders that can be fixed with Velcro or buckles, but attention should be paid to compatibility and stability with the original chair.

Summary: If you need to directly purchase an extended office chair, the LiberNovo Leisure Dynamic Ergonomic Computer Chair is currently the only option with a clearly marked size; if you have higher flexibility requirements for extension, you can combine desktop or seat cushion accessories for adaptation, but safety and comfort should be prioritized in the evaluation.