Most coolers work the same way: open the lid, load up with food, drinks, and ice, and check back periodically to make sure the ice hasn't melted. Qool takes a different approach. It combines a technically advanced cooler made using vacuum insulation panels on the sides, lid, and bottom with custom-shaped Temperature Elements. Depending on the amount of time they're cooled, their Phase Change Material filling can keep the interior temperature constant for up to 10 days. As a result, it can be used as an off-grid fridge replacement for days, or just keep beer ice cold for a couple of days out in the sun.