Start with film thickness
Thickness is usually shown in microns, often written as um or μm. A higher number means more material per bag, but strength also depends on formula, sealing, and perforation
When a supplier quotes 12um, 15um, 18um, or 20um, ask for physical samples, Numbers help you screen options, but hand feel and tear-off quality close the decision
Read the bag size in real use
A common dog poop bag size is around 23 x 33cm. The first number is width, the second is length. Buyers should test whether the opening is comfortable, whether the bag ties easily, and whether the size fits the target dog segment
For premium packs, a slightly larger or thicker bag can make the product feel safer even when the printed claim stays simple
Roll count changes retail math
15 bags per roll and 20 bags per roll create different shelf stories. A 15-count roll can suit compact refill packs and dispenser formats. A 20-count roll can make the pack look better on value per bag
Always compare roll count together with box count and carton count. A quote that looks cheaper may simply include fewer bags
Carton data affects landed cost
Ask for carton dimensions, gross weight, net weight, units per carton, and pallet loading if you ship larger orders. These details affect freight, warehouse handling, and FBA planning
If you plan Amazon or Shopify bundles, ask your supplier to show how the retail boxes sit inside the master carton
Do not separate specs from documents
For compostable bags, ask whether the certificate scope supports the material or finished product you plan to sell, Also check whether the packaging claim matches the certificate type
A clean spec sheet should include product size, material, thickness, roll count, pack format, carton data, shelf-life guidance, and available certification files
A useful supplier quote lets you compare product feel, compliance support, and logistics cost in one place