Material Polyester, Aluminum, Cotton Age Range (Description) Adult Special Feature Waterproof Number of Pieces 1 Pattern Solid Color 1. [Material] The outer part of the lunch bag is made of durable cationic fabric, and the inner part is made of aluminum foil + 5mm pearl cotton, which is an absolute insulating material, non-toxic, no BPA. The thermal insulation insert allows this thermal lunch bag to keep food and drinks cold/warm/fresh 2. [Dimension] which looks like a small lunch bag for women/men, but can hold lunch for 1 to 2 people, the inside is spacious enough to easily place your lunch drinks sandwiches with fruit or vegetables. You can measure the size for a better fit before purchasing. 3. [Convenient design] The handle strap of our lunch bag is long enough, so when your hands are tired, you can easily put the lunch bag on your forearm. 4. [Fashionable design] Our reusable lunch bag has a simple, stylish and durable design, suitable for women and students. and it can reduce the pressure on your hands. A variety of colors follow the trend, carrying this lunch bag will add personality to your style