Coolinger Backpack Cooler - Extended cooling performance: This backpack cooler uses efficient insulation technology and an embedded aluminum foil layer to keep food and drinks well preserved for up to 4 hours. The interior insulation helps you enjoy the best taste of your meals anytime, anywhere. - Thoughtful organization: The Coolinger backpack features multi-layer dividers and external storage pockets to accommodate fruits, beverages, and meals with ease, providing a roomy interior for well-planned outings. - Ergonomic comfort: Designed for comfort, it uses 3D air-vented pearl cotton padding and shoulder contoured S-shaped straps. Thick breathable mesh reduces pressure for a comfortable carrying experience. - Enhanced night safety and durability: Adjustable shoulder strap buckle, smooth zipper, and robust hardware pulls ensure durability and convenience. The integrated reflective strip enhances safety on nighttime trips, while attention to detail highlights the high-quality construction. - Practical use scenarios: - Day hikes or picnics: keep drinks and lunch cool while you explore. - School or work outings: organize snacks, fruits, and beverages for easy access. - Weekend trips or commuting: carry meals and refreshments with reliable insulation and comfort. - Key attributes: - Function: Keeps perishables cool for hours, with organized storage for a variety of items. - Compatibility: Suitable for standard meals, drinks, and snacks for outdoor activities. - Size: Designed for a roomy interior to hold multiple items without bulk. - Material: Insulation with embedded aluminum foil, multi-layer dividers, external pockets, and breathable padding. - Performance: Balanced cooling, comfort, and safety features for everyday use.