VARIDESK - Adjustable Standing Desk Chair - VARIChair - Black Dynamic range of movement both sitting and standing Low profile back to promote good posture Air-lift piston mechanism raises the seat up to 32.75" (83.19 cm) Comes fully assembled An active complement to your existing desk chair Air-lift piston mechanism Comes fully assembled and ready to use Minimal footprint Low profile back to promote good posture Adjustment Range: 23 to 32.75&#034; (58.42 cm to 83.19 cm) Weighted Base Size: 15.75&#034;w x 15.75&#034;d (40.01 cm x 40.01 cm) Weight Capacity: 220 lbs (100 kg) Net Weight: 26.31 lbs (11.96 kg) Shipping Weight: 31.24 lbs (14.2 cm)