Insulation System: High-quality insulation materials form an insulation system, and thick insulation walls form a fully insulated pocket, allowing food and drinks to stay hot or cold for 5-7 hours. Multi-functional: Can be used as a lunch bag, picnic bag, or shopping bag (heat and cold retention function, freshness preservation function, can be used to transport frozen food, hot food, cold drinks, ice cream, dairy products, etc. during shopping) as a warm and cold keeping bag, suitable for both winter and summer. Stylish and Practical Design: Bright colors and a modern, eye-catching style. The ideal size provides enough space to store most things, such as water, sandwiches, fruits, snacks, ice cream, or other items for camping, school, or travel. The zipper can be easily closed to store snacks or lunch. Features: - Materials: High-quality 300D Oxford cloth + 5mm thick high-quality EPE foam + environmentally friendly, waterproof, food-grade PEVA Color: Gray Sizes: Small and Large. Small size for 30 SAR