Insulated zipper bags maintain food temperature and support the environment all at once! Made from non-woven polypropylene material with an insulated polyester fiber and coated thermal film interior. Keeps food hot or cold for hours! Features square zippered top for a increased capacity. In fact, this is a safe, environmentally friendly, amazing insulated zippered bag that can be reused, stamped with your company's logo, corporate image, and is the perfect project for customer satisfaction and retention strategies. During the shopping process, your customers will proudly carry this bag, thereby exposing your brand and raising awareness of your brand. Of course, you can also choose to offer it for free or have your customers buy it in your store as an alternative to plastic bags.