Yaheetech Office Desk Chair Mid-Back Adjustable PU Leather Executive Chair Color:Black with two vertical cross frames

with two vertical cross frames that form a double-X-shaped integrated support

The mattress cover is designed with many small breathable holes to allow air to pass through and prevent heat buildup

while also preventing damage to wood or PVC flooring

A2: They have stops

8innch error due to manual measurement

Yaheetech Office Desk Chair Mid-Back Adjustable PU Leather Executive Chair Color:Black with two vertical cross framesMid Back Office Chair with Gold Frame, 360 Degree Swivel PU Leather Office Executive Chair with Height Adjustable Seat and Chrome Plated Metal Base About this item Sturdy ConstructionFor the back and seat we apply quality PU leather upholstered fire retardant foam cushioning, and antirust chrome plated steel for the arm and star base. This sturdy office chair with carefully selected materials has been tested to hold up to 130kg 287 pounds. Convenient