Grey Mailing Bags Assorted Pack – 100 Mixed (4.5x7 ″ to 13×19″) – Strong 60 µm Self-Seal Postal Bags for e-commerce Shipping
Grey Mailing Bags Assorted Pack – 100 Mixed (4.5x7 ″ to 13×19″) – Strong 60 µm Self-Seal Postal Bags for e-commerce Shipping
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120 grey mailing bags across six practical sizes – the dependable, everyday choice for busy packing benches. You get 20 of each: 4.5×7" (114×178 mm), 6.5×9" (165×229 mm), 9×12" (229×305 mm), 10×14" (254×355 mm), 12×16" (305×406 mm), 13×19" (330×483 mm). Each bag is made from 60 µm, 100% recycled LDPE (code 4) with a self-seal, tamper-evident closure. Moisture-proof / water-resistant and fully opaque for privacy.
Need a single size? See all Grey sizes.
What’s in the pack (sizes, mm & typical fit)
This assorted pack gives you 20 of each size — six options to suit everything from small accessories to bulkier apparel.
| Size | Inches | Millimetres | Typical fit | Qty | Single-size page |
|---|---|---|---|---|---|
| XS | 4.5×7″ | 114×178 mm | Jewellery, USBs, gift cards | 20 | 4.5×7" page |
| Small | 6.5×9″ | 165×229 mm | Phone accessories, small cosmetics | 20 | 6.5×9" page |
| Small | 9×12″ | 229×305 mm | A4 papers, single T-shirt, boxed beauty items | 20 | 9×12" page |
| Medium | 10×14″ | 254×355 mm | Books, A4 bundles, light knitwear | 20 | 10×14" page |
| Medium | 12×16″ | 305×406 mm | Hoodies, jeans, small boxes | 20 | 12×16" page |
| Large | 13×19″ | 330×483 mm | Joggers, bulkier apparel, large books | 20 | 13×19" page |
Why choose this mixed pack?
- Versatile: six sizes handle nearly any daily order type.
- Faster despatch: grab the right size instantly and seal in seconds.
- Lower postage costs: lightweight 60 µm film keeps parcels in cheaper bands.
- Smart, private finish: opaque grey film looks tidy and hides contents completely.
Key benefits
- 60 µm co-extruded LDPE for puncture and tear resistance.
- Moisture-proof / water-resistant exterior for protection in transit.
- Self-seal adhesive for a tamper-evident, permanent bond.
- 100% recycled and recyclable — remove glue strip before recycling.
Who uses these grey mailing bags?
Trusted by e-commerce retailers, marketplace sellers, and craft or boutique brands who value reliability and cost control. Perfect for apparel, accessories, books, stationery, beauty products and light boxed goods.
Fit & packing guidance
- Measure carefully: width + depth ≤ bag width; length ≤ bag length.
- Pad corners: round or cushion sharp edges on boxes.
- Press out air: flatter parcels scan and stack better.
Mixed vs single-size packs
- Choose this mixed pack if your order sizes vary or you’re testing demand.
- Choose single-size packs for repeat items — cheaper per bag and quicker to pick.
- Best workflow: keep this mixed pack plus your top-used size on the bench.
Bench workflow tips
- Layout: arrange left-to-right from smallest to largest for fast access.
- Test snugness: start small; move up only if seal strains.
- Smooth corners and press air out before sealing.
Royal Mail fit guidance
Approximate packing guidance to help stay within Royal Mail parcel bands:
| Size | Typical use | Band guidance* |
|---|---|---|
| 4.5×7″ / 6.5×9″ | Accessories, cosmetics | Often Large Letter when flat |
| 9×12″ / 10×14″ | A4 items, T-shirts, books | Usually Small Parcel |
| 12×16″ / 13×19″ | Hoodies, jeans, small boxes | Small / Medium Parcel depending on depth |
*Always confirm latest Royal Mail size and weight guidance for your service.
Why mailing bags beat boxes
- Lighter: cut postage weight and save money.
- Less space: store flat and ship more per batch.
- Greener: fewer materials and lower carbon footprint.
Eco & materials
Material: 60 µm, 100% recycled LDPE (code 4). Recyclable in many UK film schemes (remove adhesive strip). Not biodegradable or compostable.
Storage & performance
Store between 13 – 21 °C and out of direct sunlight. Let cold stock acclimatise before use to maintain optimal seal strength.
FAQs
Can I change the size mix?
No — this fixed assortment includes six sizes (20 of each). For bulk of one size, use the individual product pages above.
Are all bags the same thickness?
Yes. Every bag in this pack is a consistent 60 µm for strength and reliability.
Are they waterproof?
They’re moisture-proof / water-resistant, giving reliable protection for normal courier routes.
Can I recycle them?
Yes. Made from LDPE (code 4) — recyclable through most UK film-recycling points. Remove the glue strip before recycling.
Build your full packing setup
Pair these with packaging tape, document wallets, and cardboard boxes. See all Mailing Bags to match sizes and colours.
Royal Mail 24 Tracked
Dispatched same day if ordered before 5 pm Monday to Friday. Please allow up to 1-2 days for delivery.
£1.99
DPD Next Day
Dispatched same day if ordered before 3 pm Monday to Thursday. Not available to Scottish Highlands & Islands.
£4.99
Free on orders over £100