30L Capacity Design: 30liter capacity (equivalent to 48 cans); insulated cooler bag that easily supports family picnics, camping trips, or team events. The partitioned interior prevents crosscontamination between hot and cold items and suits 58 person gatherings. Portable Adjustable Shoulder Strap: 4 cm wide padded handle and a 130 cm adjustable shoulder strap for comfortable carrying. Dualcarry design reduces shoulder pressure by 40%. Quickrelease buckle allows instant switch between handheld and crossbody modes, ideal for hiking, market trips, or crowded settings. Keep Warm and Cold for a Long Time: Built with a composite structure of thickened oxford cloth outer layer, inner aluminum foil, and inner cotton core. Integrated PVC bottom plate enhances rigidity and helps maintain 04 C for more than 12 hours, keeping food fresh during long outdoor activities or daily commutes. Leakproof and Waterproof Design: Heatwelded seams and waterproof material. Seamless aluminum foil lining resists liquid penetration even when tilted at 30 degrees. Wearresistant Oxford outer shell has passed 20,000 Martindale friction tests for longterm durability. Use Scenarios: Suitable for family picnics or beach days with hot and cold items; camping trips or sports events requiring organized meal storage; daily commutes or market outings where durable, reliable temperature control and easy transport are beneficial.