MaterialPolyester, Aluminum, Cotton Age Range (Description)Adult Special FeatureWaterproof Number of Pieces1 PatternSolid 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 insulation material, non-toxic, no BPA. The heat insulation lining make this thermal lunch bag can keep food and beverages cold/hot/fresh 2. [Dimension] which looks like a small lunch bags 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 fruits or vegetables. You can measure the size for better fit before purchasing. 3. [Convenient Design] The handle strap of our lunch tote 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, which is suitable for women and students. and it can reduce the pressure on your hands. A variety of colors follow the trend, carrying this lunch sack will add personality to your style