Features: 1. Dual-purpose cold and hot, healthy life, multi-core technology, dual-purpose cold and hot, worry-free travel. 2. PP inner shell material: heat resistance, cold resistance, high temperature resistance, stable performance, almost no water absorption 3. EPS foam: Polyurethane is an ideal insulation material for refrigeration equipment. 4. Polyethylene shell: good mechanical properties, strong impact resistance and environmental protection. 5. Applicable scenarios: camping barbecue, outdoor picnic, fishing, medicine refrigeration, fresh food, refrigerated transportation, etc. Product information: Name: Portable cooler Color: blue/orange Shell material: PE material Insulation material: EPS material, PU material (55L large, not suitable for car trunk, not suitable for SUV model) Refrigeration time: about 48 hours (under normal temperature) Holding time: about 8 hours (constant temperature) Use correctly 1. Try to avoid direct sunlight to the incubator 2. Minimize the number and time of opening the lid 3. Try to fill the incubator 4. Try to freeze or preserve food in advance 5. Configure enough ice cubes or ice cubes Product List: 1 cooler