Ultrasonic Dot Pattern lunch Ice Pack is a high-quality insulated lunch bag that combines fashion and functionality, specially designed for office workers, students and outdoor enthusiasts. Ultrasonic dot matrix embossing technology is used to create a unique dot matrix texture that is both beautiful and durable, significantly improving the wear resistance and stretch resistance of the cooler bag. This cooler bag uses high-density thermal insulation material to effectively isolate external temperature fluctuations and ensure that food remains at a constant temperature for a long time, so that your food can stay fresh and delicious at all times. The Ultrasonic Dot Pattern lunch Ice Pack has a multi-layer protective design. The inner layer is made of food-grade PE material, which is non-toxic and odorless, ensuring food safety; the outer layer is made of waterproof Oxford cloth, which effectively prevents moisture penetration and protects food from external contamination. The portable and practical hand-held design and detachable shoulder strap make it easy for you to carry lunch. You can adjust the carrying method according to your needs, providing more convenient options. This cooler bag features a simple and stylish design and a variety of colors to meet your personalized needs. Whether it's work, school or outdoor activities, the Ultrasonic Dot Pattern lunch Ice Pack can be your best companion.