Krustbuster, Multi Use, Crust Remover and Sealer Unique 4 in 1 devise It's a pocket sandwich sealer, crust remover, container, and a kitchen toy that encourages good eating habits! Puts the fun back into making sandwiches; perfect for peanut butter & jelly, toast, ham & cheese, grilled cheese, egg sandwiches, tuna fish, chicken salad and even hot dogs Dishwasher safe