Poly Bag Size and Mil Reference Chart

Direct answer: choose poly bag size by product width, length, depth, closure allowance, and whether the item is flat or bulky. Choose mil thickness by product weight, sharpness, handling risk, storage time, and whether the bag is used for retail packing, fulfillment, storage, or heavier shipping.

Poly Bag Mil Thickness Chart

Mil range Typical fit Buyer check
1 to 1.5 mil Light protection, light storage, apparel, documents, and low-abrasion parts. Confirm the item has no sharp edges and does not need heavy handling protection.
2 mil General retail packing, ecommerce fulfillment, apparel, kits, and common storage work. Use as the practical default when the item is light but handled often.
3 mil Heavier products, warehouse handling, parts, and orders where abrasion risk is higher. Check product corners, item weight, and whether the bag will be packed inside another shipper.
4 mil Industrial handling, heavier contents, tools, components, or storage where extra durability matters. Compare against 2 mil if cost and storage space matter.
6 mil and above Heavy-duty storage, high-handling parts, and specialized use cases such as anti-static part storage. Use exact-spec pages and product details before substituting from a lighter bag.

Poly Bag Size Fit Checks

  • Width: measure the widest point of the product, including inserts, folds, or grouped items.
  • Length: include enough room for closure method, labels, and handling without forcing the product into the bag.
  • Depth: use gusseted bags when the item is bulky, boxed, bottled, or not naturally flat.
  • Material needs: check whether the order needs clear, black, anti-static, resealable, or gusseted bags before comparing sizes.

Flat vs Gusseted Poly Bags

Bag style Best fit Risk if chosen wrong
Flat poly bags Apparel, paper goods, flat kits, light parts, and documents. Bulky items can stress seams or require oversizing.
Gusseted poly bags Boxed items, bottles, grouped products, and thicker products that need depth. Too much unused depth can make packing loose or untidy.
Resealable bags Parts, samples, kitting, returns, and products that may be opened and closed. Closure allowance changes the usable inside length.

Recommended Packrift Buying Paths

These are buyer routes to check, not price or inventory claims. Open the product page or collection to confirm current details before ordering.

Path Use when Link
Poly bags collection Start here when you know the bag family and need live product pages. Open buying path
1 mil poly bags Light protection and basic storage checks. Open buying path
2 vs 4 mil poly bags Commercial comparison for standard retail and heavier handling. Open buying path
PBAS8222 6 x 10 6 mil anti-static bags Exact-spec anti-static bag path for parts, kits, and stockroom reorders. Open buying path

Before Ordering Poly Bags

  • Confirm inside dimensions, material, closure type, pack quantity, and current product details on the live product page.
  • Choose the thinnest bag that still fits the product, handling risk, and storage or shipping use case.
  • Use exact-spec pages for repeat SKU buying or regulated workflows such as static-sensitive parts.
  • Use the bulk quote route for repeat orders, mixed poly-bag orders, or multi-location purchasing.

Related Buying Paths

FAQ

What poly bag mil thickness should I choose?

Choose thickness by product weight, sharpness, handling risk, and whether the bag is used for storage, retail packing, fulfillment, or heavier shipping.

Is a thicker poly bag always better?

No. A thicker bag can cost more and take more storage space. Use enough thickness for the product and handling risk, then confirm live product details before ordering.

How do I measure a product for a poly bag?

Measure product width, length, depth, inserts, and closure allowance. Use flat bags for thin items and gusseted bags when the contents need depth expansion.