f6685979__Personal_Comfort_A5__Mattress__Personal_Comfort
Upgradeable & Changeable Components Change the comfort of the foam at anytime, components can be replaced anytime. Upgrade from one mattress to another. Upgrade to an adjustable foundation at anytime. [Sleep Number®] No The beds are not convertible to different models. Lowest end model cannot be upgraded to top of the line model. [Personal Comfort] 
Yes Upgrade or downgrade the topper foam, cover, or pump system at any time for the life of the mattress. Our lowest end model can be upgraded to our highest end level model. Value added feature.
Sleep Number p5 Bed ® versus the Personal Comfort A5® Mattress
Personal Comfort