This 50 ounce reusable Stand-Up Porter Bag is a useful addition for everyday use whether cooking, freezing, steaming, preserving or storing. Each bag is made from one piece of 100% LFGB-certified silicone with no chemicals, glues, or adhesives. It's easy to load, unload, and store upright. Flip the bags inside-out to hand-wash or throw it in the dishwasher and with its curved corners there's nowhere for pesky buildup to hide.