Come and see our amazing products. 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 100% cotton exterior layer provides comfort to your skin. Pls confirm with us about the packing info, stock color and exact production time before placing your order.