What foam density should you look for in an ergonomic chair seat?

Commercial-grade ergonomic chairs use foam rated at 1.8–2.5 lbs per cubic foot (PCF) — dense enough to withstand 100,000+ compression cycles without losing support. Chairs using foam below 1.5 PCF tend to bottom out within 2–3 years, which is the most common complaint you'll read in reviews of budget chairs. If a product listing doesn't disclose foam density, that's worth noting as a quality signal. FindOfficeFurniture.com carries ergonomic chairs built with commercial-grade foam — call 888-719-4960 to compare options.