Microwave Potato Cooking Bag with recipes book - Premium ; Burlap & Cotton Cook a perfect potato in 6 to 12 minutes depending on how many are placed in the jacket, it holds up to four potatoes. The skin and potato will stay very hot and moist after cooking. Mr. Spud Jacket Microwave cooking bag is also great for cooking all kinds of other vegetables found in the recipe book that comes with your purchase. The Jacket is reusable and requires minimal care, detail care instructions are listed in the accompanying cook book. Measure approximately 10 Made from 100% all natural burlap and cotton Fabric  The all-natural, unbleached burlap and cotton material contain no dyes - So your food will not be exposed to the possibility of dangerous dyes or chemicals.