Product Specifications
This insulated cooler backpack features a black polyester exterior with a structured upright design. The stated size is 42 x 31 x 25.5 cm and the weight is 0.7 kg. Based on the provided information and image, it includes a main cooler compartment, a front zippered pocket, and mesh pockets on the sides. The package contains 1 cooler bag.

Core Features
This product is designed as a waterproof insulated backpack cooler with a 33L capacity. It combines carrying convenience with cold storage functionality, making it suitable for transporting chilled beverages, picnic items, and other food supplies. The backpack style helps keep both hands free during transport, while the multi-pocket layout supports easy organization of items.

Suitable Scenarios
Suitable for picnics, outdoor gatherings, and casual day trips. The stated capacity and picnic-oriented design make it appropriate for use by 2 to 4 people. It can be used to carry cold beverages such as beer as well as packed food in outdoor settings.

Product Summary
This 33L cooler backpack offers a practical combination of waterproof construction, insulated storage, and portable backpack carrying. With its black polyester design, lightweight build, and multiple storage compartments, it serves as a functional option for picnic and outdoor cooling needs.