Online Retailer offers exclusive memory foam mattresses packaged for standard shipping and easy unwrapping SALT LAKE CITY, 2015-8-25— /EPR Retail News/ — Overstock.com, Inc. (NASDAQ:OSTK) now offers its customers exclusive access to ComforPedic® from Beautyrest® memory foam mattresses, delivered to their doorstep in easy-to-unwrap packaging designed to meet the size requirements for standard shipping. The mattresses, which…