As the name suggests there are two walls that are locked inside and contain a lid. Boxes with lids are always the first choice of consumers as they are good to keep your products secured and save them from falling out. Double locked wall lid is combined with two types of custom packaging boxes. Simplex tray and double wall frame tray. Both pieces come with durable side wall structure, which gives a strong and elegant sense of this combo style, unique way of sliding up lid offer wide loading entrance. This style is distinctively premium products from those of average quality and price. These boxes are mostly used for cosmetics, food, and retail products.