This cooler bag uses a variety of high-quality materials, including PP non-woven fabric or woven fabric, and is filled with 2/3/4mm EPE ALU foam inside to ensure excellent insulation and fresh-keeping effects. 110G/120G PP non-woven fabric with The combination of 2mm ALU foam coating makes the cooler bag durable and waterproof to keep food fresh for longer. In addition, the 0.063mm PET ALU aluminum plate is used in combination with 1mm EPE foam and 0.05 LDPE plastic film to provide an additional layer of protection for the refrigerated bag, effectively preventing the impact of external temperature on the food and ensuring that the food remains in the best condition during transportation . Large capacity design, suitable for food carrying and preservation needs in various occasions. The combination of a variety of high-quality materials ensures excellent insulation and freshness preservation effects. Durable and waterproof, it keeps food fresh and tasting good for a long time. The multi-layer protection design effectively prevents the impact of external temperature on food and ensures the safety and quality of food.