1. Keep The Temperature Low: The Cooler Backpack is made of heavy duty nylon that resists ripping, tearing and scratching while remaining lightweight to carry. The interior lining helps prevent hot air from entering, so ice cubes, ice cream or cold drinks stay cooler and melt less quickly. 2. Capacity Backpack Cooler: The Cooler Backpack measures 12.6 x 13.8 x 7.1 inches and holds up to 30 L. Roomy enough for ice cream, beers, beverages, fruits, ice cubes and other essentials. A suitable insulated cooler backpack for hiking, camping, picnics and the beach. 3. Beautiful and Lovely Appearance: The Cooler Backpack offers multiple styles including leopard pattern, sunflower pattern and flower designs. Suitable for adults, with a smooth feel and bright colors. 4. Lightweight, Durable and Weatherproof: The bag weighs 0.375 kg (0.83 lb), making it easy for an adult to carry. Made of cloth material, it is durable, can be beaten and pulled, and is waterproof and sandproof.