The bread bags can be washed in warm soapy water, rinse, let them dry, and you are good to go. It can capable to withstand temperatures up to 300 degrees centigrade. It is easy to take around while you traveling, and it can be used in the toaster, microwave, oven, or on a grill. It is durable, and they last longer than you would expect. It is constructed of fiberglass material and has a long service life. It is available in 4 size, you can choose the one according to your needs. Allows you to quickly cook your favorite grilled cheese sandwiches. Item Name: Toast Bag Material: Fiberglass Features: Easy to Clean, Heat Resistance, Non Stick Size Details: Size 16cm: 16cm x 16.5cm/6.3" x 6.5" (Approx.) Size 18cm: 16cm x 18cm/6.3" x 7.09" (Approx.) Size 19cm: 17cm x 19cm/6.69" x 7.48" (Approx.) Size 20cm: 20cm x 22cm/7.87" x 8.66" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Toast Bag