• Flip-up armrest allows you to adjust it up and down to accommodate sitting posture • Ergonomic backrest fits well with back curve and thus alleviates fatigue • Adjustable foot ring can be lifted up and down to rest your feet at an appropriate height • Designed with an adjustable lumbar support to fulfill the requirements of different people • Breathable mesh fabric makes the chair for all seasons especially in particular hot season • High-density sponge cushion allows you to sit for a long time without feeling tired • Five-claw base disperse pressure and thus keep exceptional stability • Wear-resistant and smooth-rolling casters enable free mobility for more fun 360° • Swivel seat helps you change the direction effortlessly to chat with others