1958MC-Master Case of 240 pairs of Footwarmer Insoles: Heat Factory Footwarmers Insoles ship in master cartons with 8 display boxes per case, which equals 240 pair per case. The cases are double walled, corrugated cartons. These extra strong master cartons ensure that the display boxes arrive in great condition. Each master carton is clearly bar-coded and has product information on 2 or more sides. Sold as 240 pairs/case.