This 450 lbs-capacity ergonomic saddle stool solves the chronic back and lumbar fatigue that plague dental hygienists, stylists, tattoo artists, and spa therapists through long shifts. The saddle-shape PU-leather seat aligns hips with the seat line—relieving lower-back pressure and promoting upright posture the way ergonomic clinicians recommend. An SGS-certified 3-stage hydraulic gas lift adjusts seat height from 21.7 to 28.0 in / 55 to 71 cm, while the widened 21.3 in / 54.9 cm metal base keeps the chair stable under users up to 450 lbs / 204 kg—no bending, no wobble. Five 360 deg swivel PU casters roll silently across tile, hardwood, carpet, and vinyl without leaving scuff marks, so you glide between stations without interrupting clients or waking a patient. The 14.8 x 14.1 in saddle cushion is packed with 2.4 in / 6 cm of high-density foam (20 percent thicker than standard saddle stools) and topped with breathable PU leather that wipes clean with disinfectant. Overall footprint 21.3 x 21.3 x 21.7-28.0 in / 54 x 54 x 55-71 cm; net weight 10.4 lbs / 4.7 kg; main materials PU leather, foam, iron. Model MST003-3W, white. Color: White seat with chrome-tone metal base.