1 Mil - Economical, lightweight, temporary storage. 1.5 Mil - Protection for lightweight items like clothing and food. 2 Mil - Most popular thickness used for light to medium weight products. 3 Mil - Sturdy Mil protects medium to heavier products. 4 Mil - Heavy-duty Mil used for products like industrial hardware and tools. 6 Mil - Extra heavy-duty for puncture and tear resistance. 8 Mil - Ultimate protection and maximum strength for items with sharp edges.