INSULATED FOOD-GRADE MATERIAL: The reusable lunch tote bags are constituted with Pearl cotton and aluminum foil,which is known for its excellent air isolation and temperature retaining,keeping your food cold\/warm for hours.Tight stitching without tearing,durable and sturdy.Can Keeps your food warm or cold for hours well.The cotton exterior layer provides comfort to your skin. LIGHT AS FEATHER DECENT CAPACITY: our small lunch bags for women weights only 0.3Ib,which is barely noticeable to holding while empty.Large enough for all-day food.With the size of 10.24H x 9.4L x 6.7W,our cooler bag fits your daily meals and snacks for kids and adults. WIDE-OPEN VELCRO CLOSURE: the entrance of the thermal lunch box can be opened up to 9.4L x 6.7W big.Therefore your containers can be put into the bag and taken out of the bag HORIZONTALLY without risking leaking or spilling.Velcro closure not only makes easy access to your food but also tightly secures your foods in the bag. DIRT-PROOF FOLDABLE: The interior is water and grease repellent,so a simple wipe with a damp cloth could easily clean the lunch bag and leave no odor.This bag can be folded to a size of a notebook,which makes it convenient be stored. Packing 4 x Lunch Bag