List of Sleep Number Stores in King of Prussia, PA Outlet Note Regular Brands Sleep Number Pennsylvania King of Prussia Rating 4.8 based on 84 votes Official Outlet www.sleepnumber.com/eng/categories/Sleep-NumberPillows-Bedding/Clearance Official Website http://www.sleepnumber.com/ Products Bedding Pillows Mattresses Bed Bed Sheets Adjustable Beds Bed Accessories NameAddressPhone Name/Address/Phone Sleep Number by Select Comfort outlet - King of Prussia King of Prussia Mall (610) 878-9560 Sleep Number outlet - King Of Prussia 690 W Dekalb Pike (610) 878-9560 People Also Viewed