SUPERIORITY: Winrock bags are soft and elastic , they are zip lock seal, don't need any lids to keep food fresh, and the bags can stand up and easy for keep soup or juices in it. Just burp the bags to remove excess air and pinch the seal closed. They are Small figure but large capacity, Save more space on your refrigerators. HOW TO USE: Winrock bags can used as frozen bags, lunch bags, food storage bags, snack bags, cosmetic bags, pen bags and so on. They are thick and durable, not easy for damage, so it is very suitable for children use. Not as the food box containers, they are small and easy to take, they can used in home, kitchen, office, school, outdoor or a travel. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.