The lid and base of the cooler are made using blow molding technology, making them particularly shock and break-resistant. High-quality and extra-strong PU foam insulation ensures long-lasting insulation, keeping ice for three days or more. Tested: The cooler was filled with one-third ice cubes and stored for three days (72 hours) at a constant ambient temperature of 25°C. Result: After three days, one-third of the ice cubes remained unmelted and continued to provide cooling effects inside the cooler. Ideal for all customers who value professional cooling, especially for outdoor applications (garden parties, camping, caravanning, marine, etc.).