Mobis II Seat supports a leaning posture that encourages a hip-to-torso range of 130 to 135 degrees, which provides less pressure on your spine and connecting muscles when compared to standing. Pivoting seat leg inspires dynamic movement to keep users active throughout the workday and the minimalist design encourages you to use muscles to support a better posture versus other traditional seating options. Tri-Flex Seat Cushion has built-in sitz bone contours and a waterfall edge for plush support and may help to reduce pressure points. Seat pan is positioned forward to help promote an open hip angle that may help engage the core muscles. Ellipse-shaped base with non-slip rim provides stability for active postures. Easy-adjust piston-release handles raise and lower the seat, encouraging a range of postures from active sitting to leaning. Seat pairs with any standing desk or table, and is rated up to 300 lbs. It accommodates user heights between 4'11" and 6'8". Simple, two-step assembly. Designed by Martin Keen.