Need to bake a potato quickly? Then try the Microwave Baked Potato Sack. This sack is made of 100% cotton materials. This allows the sack to be placed in the microwave for 4 minute intervals without scorching. You can now bake a potato in under 10 minutes. You can also use the sack to cook corn, vegetables, sweet potatoes, or warm tortillas, taco shells and breads. SIZING / FINISHED MEASUREMENTS Approximately 10" x 18"