Lanker’s quad seal gusset bags offer a gusset on all 4 sides. The gussets expand when the package is filled with product, so that the weight of the product usually holds the bag upright. Sealed on all four corners of the bag, rather than just the back (hence its name), the quad seal bag offers four crisp, clean panels for labels and graphic displays, creating a dramatic shelf presence. The side gusset bag is the recognized format for coffee packaging today. It is also widely used in other markets, such as, pet food, powders, teas and other specialty food products.