What is Mil Strength?

A "MIL" is one thousandth of an inch and measures the thickness of the bag. The higher the MIL strength, the more your bag can hold.

  1. 1 MIL
    Lightweight, great for temporary storage.
  2. 2 MIL
    Most popular thickness, used for shipping light parts, clothing or protecting food.
  3. 3 MIL
    Offers added protection, used for document storage, healthcare, restaurants, and kit manufacturers.
  4. 4 MIL
    Offers heavier protection, used for items such as industrial parts and hardware.
  5. 6 MIL
    Very strong, protects against punctures and tears, used for parts, gears and heavy metal objects.

How to Measure Flat Poly Bags

Flat Poly Bag

Flat Poly Bags

Width (W) x Length (L)

Shop Now

How to Measure Zipper Bags

Zipper Bags

Reclosable "Zipper" Bags

Width (W) x Length (L)

Zipper bag measurement does not include the zipper and lip.

Shop Now

How to Measure Gusseted Bags

Gusseted Bags

Side Gusseted Bags

Width (W) x Depth (D) x Length (L)

A gusset is a triangle shaped fold on either side of a bag. The gusset is considered the depth of a bag.

Shop Now