TIPS 1.Please allows 0.1-0.2 inches error as manual measurement. 6-Hour Temperature Retention - PEVA lining keeps contents cold (or hot) for up to 6 hours, making it ideal for picnics, beach trips, or food storage. Space Saving Foldable Design - The insulated cooler bag can folds down to 1/3 of its original size when empty, with reinforced foldable seams. Two design options: one is a direct-carry shopping bag, the other folds into an insulated box shape with a handle, both offering convenient portability. Large 30-liter Capacity - Holds up to 40 cans (standard 12-ounce) of beverages with space for ice packs. Ideal for family outings, camping, or storing meals. Reliable Materials - Made from Oxford fabric and PEVA lining, odor-free, waterproof, and easy to clean, with tear-resistant and wear-resistant properties, suitable for repeated and long-term use. Multi-functional Use - Our collapsible tote bag is ideal as a beverage cooler bag, beer carrier, fishing cooler bag, or shopping bag, and can also be given as a gift to friends or family.