Sleep Science is a brand of memory foam and latex mattresses, toppers and pillows manufactured by South Bay International. Other South Bay brands are Advanced Sleep Technology, ViscoKidz and MotionTrend adjustable beds. South Bay International is an American based company with its own 700,000 square foot foam factory in Jiaxing, China. They also provide private labeling program, which means they manufacture customized products under different brands. Sleep Science products are mostly sold at Costco.