Do you have a sore back or lumbar problems after a long time sitting in the whole workday? This ergonomic home office desk chair will help you retrieve a life of ease! This mesh office chair features a mid-back design and lumbar support, fitting your spine’s natural curve and supporting your back in a comfortable way. What’s more, the seat is padded with thick and elastic sponge and the backrest is covered with densely knitted mesh cloth. These breathable materials will softly hold your body to keep optimal comfort as they can accelerate heat effectively. The height adjustment allows you to adjust the seat height from 16.5-in to 21-in, making the chair suitable for your stature. In view of frequent movement while sitting, this swivel chair is equipped with smooth-rolling casters which make flexible mobility in all direction. The 360° swivel design enables free mobility in all directions Lumbar support fits spine curves and relieves the waist fatigue; mid back conforming to ergonomic principle perfectly supports your back Waterfall padded seat and humanized armrests for better relaxation Backrest size: 18-in x 22-in; max load capacity: 300 lb High quality mesh fabric for great breathability as well as durability Costway Contemporary Ergonomic Adjustable Height Mid-Back Swivel Task Chair in Black