The insulated lunch bag is 100% non-toxic, BPA-free and is made of high quality Oxford cloth that prevents tearing and ensures maximum durability. With an internal aluminum lining, this lunch bag is also easy to maintain and clean. Which is suitable for a variety of scenes, such as company, school, factory, outdoor, fishing. Keep warm for 3-5 hours. Orders of 2000 pieces or greater are eligible for sea shipping. 100% guarantee for quality.