Santa Claus knows when you’re sleeping, and he knows when you’re awake. Well, so do Sleep Number 360 smart beds. In fact, the beds even go a few steps further than anything Santa can deliver, such as offering dual adjustability—so you and your partner can sleep just right—Responsive Air technology that automatically adjusts the bed if you roll over in the middle of the night, a foot warming option to help you fall asleep faster, a layer with dual temperature controls....