Mesh Office Chair Swivel Computer Desk Chair w/Flip-Up Arms & Foldable Backrest Overall Dimension: 24.5” x 24.5” x 37.5”-41” (L x W x H) Adjustable Seat Height: 18''-22'' Net Weight: 22lbs Weight Capacity: 300lbs Color: Black 90°foldable backrest and flip up armrest to save space Flip down armrest to rest your arms in a comfortable position 90°-105° rocking angle and variable tightness for diversified needs Our ergonomic office chair gives the office and home a sense of highlights and fashion Designed with rocking backrest and height adjustable seat, the mid back mesh chair is suitable for studying, working and resting. You can push it under the desk for easy storage due to the foldable back. Also, the armrests allow you to turn up and down to meet your different needs. Breathable backrest with built-in lumbar support fits your body curve and relieves back pain. Wide seat with high density sponge padding reduces stress on the legs and thigh for optimal comfort while working. Heavy duty base with mute rolling casters adds extra mobility.