AO Coolers Backpack Soft Cooler High-Density Insulation Soft-sided backpack cooler with removable shoulder strap Guaranteed to hold ice for 24 hours in 120 degree weather; 18-can capacity Perfect for travel, hiking, sporting events, and picnics Features two small side pockets and one large back pocket for dry items Twice the insulation of other soft-sided coolers; leak-proof liner