Hinged cover makes it easy to open with one hand. Fits properly into backpacks, briefcases and purses. Holds sandwich or average size of snacks. Sandwich keeper is a great product from Tupperware that provides flexibility and convenience. For most of us who like to grab a sandwich on our way to work/university this product comes in really handy. Kids love the brilliant colors and parents love the durability. One piece container means no seal to keep track of, or to get lost. Hinged over is easy to open with one hand Holds an average size sandwich or snacks Fits comfortably into backpacks, briefcases and some purses. Pink Color Sandwich Keeper.