What Size Grip Seal Bag Do I Need? A Guide by Item
Not sure which grip seal bag size you need? Start by measuring your item, then use this guide to find a good match. Sizes are internal dimensions: opening width x height. Always choose a bag slightly larger than the item, so it slides in easily and the seal closes fully.
Suggested sizes by item
Item sizes vary, so treat these as starting points and check against your own items.
| Item | Suggested size |
|---|---|
| Single beads, small charms | 20 x 20mm or 25 x 25mm |
| Tiny screws, earring backs | 25 x 25mm or 30 x 30mm |
| Stud earrings, SD memory cards | 40 x 40mm |
| Small rings, washers, small clips | 45 x 45mm or 50 x 50mm |
| Buttons, small accessories | 55 x 65mm |
| AA or AAA batteries (a few) | 60 x 60mm or 60 x 90mm |
| Memory sticks, chains, small tools parts | 60 x 90mm |
| Bracelets, fixing kits | 70 x 105mm |
| Keys, small cable bundles, leaflets (small) | 80 x 120mm |
| Business cards, bank-card-sized items | 100 x 100mm |
| Chargers, earphones, coiled cables | 100 x 100mm or 125 x 125mm |
| A6 leaflets, larger parts kits | 150 x 150mm |
| Pens, long tools, narrow items | 200 x 100mm |
More detail by use
Beads, small charms and tiny screws
Try the 20mm x 20mm, 25mm x 25mm or 30mm x 30mm sizes. See the 30mm x 30mm bags. For a small quantity of beads, a smaller bag also looks neater and uses less plastic.
Earrings, rings and small jewellery
Try 40mm x 40mm, 45mm x 45mm or 50mm x 50mm. If you include a card or header inside, size up to the 50mm or 55mm x 65mm bag.
Labels, small spare parts and memory sticks
Try 60mm x 40mm, 60mm x 60mm or 60mm x 90mm.
Fixings, small parts kits and tools
Try 70mm x 105mm, 80mm x 120mm or 100mm x 100mm. Bolts and screws are heavier than they look, so choose a size that gives the contents room to settle.
Cables, chargers and earphones
Try 100mm x 100mm or 125mm x 125mm, and go up a size if the cable is bulky. Coil cables loosely, because tight coils take more room.
Cards, leaflets and small documents
Try 150mm x 150mm, which fits an A6 leaflet (105 x 148mm). The 200mm x 100mm size suits long, narrow items.
Check before you buy
- Measure both width and height of your item.
- Remember the opening width is the first number.
- Allow 5mm to 10mm spare in each direction.
- If you are packing several items together, size up.
Frequently asked questions
What if I am packing several items in one bag?
Measure them as they will sit together, and add allowance for thickness. If in doubt, choose the next size up.
How do I test a size before buying a lot?
Buy a pack of 100, the smallest pack on most sizes, and try it with your items.
Are inches available?
Our sizes are metric. See our size chart for the nearest inch equivalents.
See our grip seal bag size guide, or browse all 16 sizes in our grip seal bags collection.