Everybody has a Sleep Number. What's Yours? The Sleep Number Bed What's Your Sleep Number? Select Comfort's SLEEP NUMBER beds range from the Original Sleep Number Bed Model 3000 to the luxurious, state-of-the-art 9000 series bed set, which offers memory foam in a customized pillowtop. All models have varying features that include Pillowtop sleep surfaces, dual air-chamber technology and a foundation designed to replace your box spring. Select Comfort also sells bedding, pillows and accessories for the Sleep Number beds.