【S-shaped mesh back design】This ergonomic office chair is designed base on biological curvature of human’s back, making the S-shape of the back best fit into individuals’ body. The high-back design also provide full support to your lumbar, back and head during long working hours. Equipped with armrests, bringing premium sitting experience to all users. 【Mesh & Artificial leather mixed design】The non-woven fabrics ensure a breathable and elastic texture. Artificial leather comes with a firm, fade-resistant and easy-to-clean surface. Mix of two covering materials intends to provide various attributes and functions. A thoughtful design brings best comfort to our customers.