These bags are great for keeping your food and drinks cool on those hot summer days. With these bags, the temperature is controlled by the sun, so you're guaranteed to have a lot of fun on a day in the sun! Made with a fabric that's durable and waterproof, these bags are perfect for both outdoor and indoor use. Ingenious bag combines high-tech solar charging system with a cooler. Capacity 20 liters. Ice packs are different from refrigerators. The power supply is direct current and easy to transport. When connected to DC12V, the refrigeratory starts to work. Then the food is put into the pack to keep fresh and warm. The fabric of the pack is waterproof and anti-fouling. The insulation layer of the pack is insulation cotton. It is necessary for business trips and car families. Parameters: 1. Refrigerator power: 12V 30-60W 2, cooling capacity: 0. 02P 3, refrigeration temperature: 5-10 degrees (depending on ambient temperature) 4, vehicle converter: output 12 volts, 1-2A. NOTE： 1. Be careful not to pour water into the bag during use. 2, refrigerators are not waterproof. 3, the temperature difference between the inside and outside of the package is 10-15 degrees. 4, can not be used as refrigerators.