Ultra-Durable Construction: Heavy-duty coated metal base is designed to ensure a steady sitting experience; High-density foam gives soft and elastic touch for users; Durable PP casters ensure smooth-rolling mobility; Supple PU leather is water-resistant that allows for easy wiping clean. This rolling office chair can hold up to 300 lbs Ergonomic Backrest: Featuring an ergonomic shape, the 40cm/15.7 high backrest of this task chair with arms offers enough support to the mid-back and lower back, alleviating back tension and discomfort during long office/meeting/studying sessions Detachable Padded Armrests: Since the arms are attached with only 6 screws, you can effortlessly detach the armrests to enjoy all the benefits of an armless desk chair whenever you like. This includes having a more flexible seating posture, saving extra space in a small room, and being able to match desks of different heights Comprehensive Use: With its pretty appearance and broad utility, this mid