Looking to receive air chamber caps as soon as possible? Visit a Sleep Number store near you. Caps could be useful when moving your bed if you need to disconnect your bed from power but want to keep it inflated, or if you are doing certain troubleshooting. Compatible with all Sleep Number mattresses. We recommend checking your bed prior to ordering – caps are usually stored inside the mattress for older traditional Sleep Number beds or inside the base next to the pump for our current smart beds.