Choose paper bag size from the product box that goes inside. Measure the box width, height and depth, then leave enough room for easy packing, tissue paper, cards or several items if the bag is used for a gift set.
A paper bag that is too tight slows packing. A bag that is too large looks loose and can increase carton volume.
Start with the product box
If the product is already inside a carton, rigid box or sleeve, use that finished box size. Do not size the bag from the product alone unless the product goes directly into the bag.
For custom gift boxes or rigid gift boxes, confirm whether the bag needs to hold one box, two boxes or a set with tissue paper.
Size details to confirm
| Bag measurement | What it controls |
|---|---|
| Width | How the front of the product box fits left to right. |
| Height | How much of the product box sits below the handle. |
| Depth or gusset | Whether the box thickness fits without forcing the sides. |
| Top fold | Handle strength and clean opening shape. |
| Carton quantity | How many flat bags ship in one export carton. |
Allow space for packing
Leave enough space for the product to go in without damaging the bag edge. If tissue paper, a thank-you card or a protective sleeve is added, include those details before quoting.
For ecommerce sellers sourcing from China, the packing step matters. A product factory may need a practical bag opening and enough space to pack quickly, not just a perfect-looking mockup.
When one bag size can cover several SKUs
If several products or boxes are close in size, one bag size may cover all of them. This can reduce setup work and simplify packing.
But do not force one bag size across very different products. A small box inside a large bag can look cheap, and a large box inside a tight bag can slow packing.
What to send to the supplier
- Product box size
- Number of items per bag
- Packed weight
- Tissue paper or card requirements
- Whether bags are used at retail checkout, gift handoff or supplier packing
- Destination: your warehouse, product factory, packer or freight route
Related pages
- Custom paper bags from China
- Custom shopping bags with logo
- Custom paper bags with logo guide
- Send packaging to your China supplier
FAQ
Should paper bag size match the product or the box?
If the product goes inside a box first, size the paper bag from the finished box, not the bare product.
Can one paper bag size work for several products?
Yes, when the product boxes are close in size and the bag still looks intentional for each SKU.