Amazon.com: Hulongo Large 52cans Waterproof Insulated Cooler 。?polyester ?Imported ?Exceptional Heat Retention: Hulongo cooler backpack is designed to keep your beverages and food cool for up to 12 hours with its thickened 8 mm foam insulation and advanced silver PEVA seal. Whether you\'re heading to the beach, going on a picnic, hiking, camping, grocery shopping, this backpack will ensure your items stay at the right temperature throughout the day ?Waterproof and Lightweight: Made from high-density scratch-resistant nylon material with an extra PU coating, our cooler bags are 100% waterproof and easy to clean. Moreover, its lightweight design and adjustable padded straps make it more comfortable to carry, eliminating the hassle of carrying a heavy traditional cooler ?Multiple Compartments and Pockets: The cooler backpack features two insulated compartments to keep your drinks cool and your food dry. Additionally, it boasts a front big pocket and two side pockets, allowing you to store your snacks, phone, wallet, and other accessories conveniently. Furthermore, we provide a bottle opener for added convenience ?Leak-proof and Sweat-free: Our cooler backpack utilizes a high-tech seamless hot pressing process, making it completely leak-proof. Moreover, the additional smooth horizontal zippers enhance its anti-leaking properties ?Spacious Capacity: With dimensions measuring 17.7\'\'x12.2\'\'x7.9\'\' (H x L x W), our cooler backpack can accommodate up to 35 cans (330 ml). It offers enough space to pack meals, tall beverages, snacks