Thanks to SEVERAL other reviews on the Select Comfort Sleep Number beds that indicated the BLACK MOLD problem. After 13 months of terrible hives (and taking lots of medication) we discovered just this morning...BLACK MOLD everywhere on our sleep number bed. My hives only occurred at night...so now we know the cause. What a terrible waste of money! I'm very disappointed in this whole situation. Everyone who owns a Sleep Number bed should strip it down immediately and check for this dangerous situation. read full review »