Features: Made of hard PE shell, impact resistant and durable. EPS insulation layer delivers excellent thermal effect to keep drinks cold and food warm for several hours. PP interior wall is cold resistant and high temperature resistant. Bail handle makes it easy to carry. Suitable for camping, picnics, beach, trip, and other outdoor activities. Specifications: Material: PE shell + EPS insulation layer + PP interior Keep Warm: Max. 8 hours (under constant temperature) Keep Cool: Max. 48 hours (under constant temperature) Capacity: 3L / 8L (optional) 3L: Outside Dimension: 16.7 * 27cm / 6.6 * 10.6in Inside Dimension: 13.5 * 22.3cm / 5.3 * 8.8in Weight: 0.51kg / 1.1lb 8L: Outside Dimension: 23.5 * 33cm / 9.2 * 13in Inside Dimension: 19.5 * 28cm / 7.7 * 11in Weight: 0.99kg / 2.2lb Package List: 1 * Cooler Box