The molded industrial grade black plastic is durable, strong, and resists moisture The breathable mesh back is designed to ensure you stay cool and comfortable throughout the day, letting you focus on the job at hand. Cultivate a healthier posture this chair that lets you instantly fine-tune the height of your seat according to the height of your table, so you can minimize slouching and posture-related ailments such as neck/shoulder strains and backaches. Arms are stationary in a fixed position Designed with a combination of practicality and good looks, this chair is just what you need to complete your office or home office. 33" H x 21.5" W x 23" D