Silla de oficina ergonómica EC300

• 5-Position Height-Adjustable Backrest – the entire backrest and integrated lumbar support move together through 5 height positions (2.36" adjustment range) for a more personalized torso fit
• Wide-Surface Lumbar & Sacrum Support – integrated into the height‑adjustable backrest, moves with it through 5 positions for consistent lower back alignment
• 5-Position Sliding Seat – 1.97" / 50 mm adjustment range for personalized thigh support
• 55D High-Density Foam Seat Cushion – helps distribute pressure and maintain lasting support
• 3D Adjustable Headrest – adjusts in height, depth, rotation, and pivot for comfortable neck support
• 4-Position Recline Lock – lockable at 90°, 105°, 120°, and 130° for working, reading, relaxing, or resting
• Adjustable Tilt Tension – rotary control allows you to personalize recline resistance
• Stable Construction – Class 4 gas lift, durable alloy base, and 2.36" / 60 mm quiet-roll casters
• Recommended User Range – designed for users approximately 5'4"–6'1" and 90–220 lbs

ProtoArc EC300 High-Back Ergonomic Office Chair combines a 5-position height-adjustable backrest with wide-surface lumbar and sacrum support, a 3D adjustable headrest, and a customizable sliding seat. Four lockable recline positions and a supportive 55D foam cushion provide personalized comfort for long workdays at home or in the office.

Tips: The lumbar and sacrum support is integrated into the backrest and moves with it through five height positions. Adjust the backrest height until the support aligns comfortably with your lower back.