MATEIN Men Cooler Backpack, Gray Insulated Lunch Bag Fits 17" LaptopQuick Access Design Hook and loop top flap for easy access to drinks and snacks, reduces cold air loss and maintains low temperature effectively. 12 Hour Cooling Thick insulated interior with PEVA lining keeps items cold for 12 hours. Holds up to 30 cans, perfect for outdoor use. Multi Pocket & Leakproof Waterproof & leakproof construction with assorted pockets, insulated can sleeves and bottle opener. Top zipper is not leakproof, do not flip upside