Here’s a bag that freezes overnight, then chills all day. “It’s the only bag that keeps food and drinks cool up to 10 hours – No ice packs needed.” These bags have a freezable gel right inside the sides of the bag, so foods are kept cold from all directions. I can see these bags being useful for shopping, travel, lunch, so you can really take your food with you.”Made from food-safe, nontoxic poly canvas and waterproof EVA. PVC-, BPA-, phthalate- and lead-free. What a great idea! Bags come in 12 sizes, including a grocery-size bag.