[Features] ●It is a super cold insulation type that uses a 30mm insulation material (polyethylene foam inside) to keep coldness. ● (Regular cooler bag is 5 to 8 mm) ●Since the aluminum sheet inside can be removed, cleaning is easy. ●Comes with a non-woven bag for storage. -Comes with a cold insulation sheet to increase cold storage power. - It is a type that fixes the lid and the main body with a hook-and-loop fastener. ●Ideal for workplaces without refrigerators or long hours of outdoor work.