Easily shop poly bags in a variety of strengths from 1 Mil to 8 Mil. 1 Mil - Economical and lightweight poly bags for temporary storage. 1 1/2 Mil - Offers protection for lightweight items like clothing and food. 2 Mil - Most popular thickness used for light to medium weight products. 3 Mil - Sturdy material protects medium to heavier products. 4 Mil - Heavy-Duty material 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.