Z-Tout 8L Cooler Bags Fit and Fresh Lunch Bag for Working Camping Outdoor Hold Cold Within 4-5 Hours Waterproof Insulation Package Tote Bag Brand new and hight quality; Material: Water-proof Oxford cloth + cotton insulation+PVC Portable, lightweight with shoulder strap Insulated to keep your food and drinks cool 8L cooler Holding warm time:2-3 hours(more food in it longer it can hold warm),Holding cold time:4-5 hours(12 hours with ice in it