The Krustbuster is four devices in one. It's a pocket sandwich sealer and a crust remover, plus a container that keeps your sandwich fresh and free from getting smashed in your lunch sack. It's also child-safe so your child can play and make sandwiches with you. Perfect for peanut butter and jelly, ham and cheese, grilled cheese, egg, tuna fish, chicken salad and even hot dog sandwiches. Dishwasher safe.