Side gusset bags are named for the gusset, or fold, on either side of the bag. The gussets expand when the package is filled with product, while the weight of the contents holds the bag upright. At TricorBraun Flex, we make a full line of stock bags to accommodate most coffee roasts, as well as products sensitive to water vapor and oxygen. TricorBraun Flex foil gusseted bags come with or without our one-way degassing valves. Many of our side gusset bag options feature "easy-peel" film for customer convenience. Side gusset bags from TricorBraun Flex are available in a variety of seal options including bottom seal, center back seal, side back seal and quad seal in sizes up to 40lbs/18.1kg.