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Credit: Photograph by Michael Pirrocco

Sleep Number AirFit Adjustable Pillow with CoolFit Foam

Skip the Tempur-Pedic: This similar pillow is wrapped in gel-infused memory foam and lets you "deflate" it as much or as little as you want, rendering it firmer or softer – perfect if you don't always sleep in the same position. [From $190; sleepnumber.com]