Herman Miller Embody Chair

Among the priciest chairs here, aimed at people who shift and fidget through a long day. Instead of a mesh sling or foam cushion, the Embody uses a matrix of small supports Herman Miller calls Pixelated Support, which conforms to small movements and spreads pressure. Its Backfit control lets you tune the back to the curve of your spine, and the seat adjusts between 15 and 18 inches deep, a useful range for both short and long thighs. Check one number first: it is rated for 300 lbs, lower than the 400 lbs of the Steelcase chairs on this list. Within that limit, it comes with a 12-year warranty.