Material of Foldable Cold Storage Bag]:The picnic ice bag is made of waterproof and dirt-resistant Oxford material, durable and easy to clean. The interior is seamless and waterproof, with high-density thermal insulation. Waterproof and easy to clean:This lunch bag is soft, waterproof and insulated design, it can keep drinks cool. fresh or keep lunch warm without worrying about spills and leaks. Inside, just wipe clean with a damp cloth, like new. Thermal Insulation System:Inner thermal insulation aluminum film is widely used to help maintain the temperature of items hot or cold. This thermal bag can be used to carry hot food or cold drinks and keep them hot or cold for several hours. Easy to Carry:Portable and lightweight with a strong handle, easy to carry . It is ideal for office, school, picnic, camping and fishing, used as a lunch bag, cooler bag, picnic bag or miscellaneous bag, suitable for all ages. Versatility:Lunch box bag its very comfortable handle allows the bag to carry lunch and it is foldable for easy transport.