Also known as 24/7 chairs, these chairs are built to handle round-the-clock use for years at a time. They’re often found in emergency dispatch centers and power plant control rooms. These chairs meet strict GSA FNEW standards, which means the seat, back, arms, and tilt mechanism can all withstand hundreds of thousands of test cycles. They’re certified for at least six years of continuous use.

With a frame and legs made of 10-gauge steel, these chairs can support up to 550 lbs. For extra stability, they have seven legs—two more than standard desk chairs. Weight-activated casters keep these chairs from rolling until you sit down. Tilt the backrest into one of five positions until you’re comfortable. The lumbar support is inflatable, so you can adjust it to your desired firmness.