Pads have an insulative core and mesh pockets, fit over the food in your cooler and help keep it away from outside air. Pockets hold utensils or small food items that don’t need to be kept as cool as the rest of the cooler’s contents. Pads are blue nylon with 1 1/2″ of insulation. Every time you open the top the warm air cannot get to the ice and cold items below.