Grey Mailing Bags 4.5×7" (114×178 mm) are perfect for small items that still need strong protection and a tidy, professional finish. Made from 60 µm 100% recycled LDPE (code 4), they’re moisture-proof, fully opaque, and fitted with a fast self-seal strip for quick, secure packing. Ideal for jewellery, samples, accessories, and A6 cards — these mini grey mailers combine privacy, strength and eco performance in one compact size.
Trusted by online sellers across the UK, these compact bags help reduce postage weight while maintaining a professional look for every order. The recycled co-extruded film gives durability and protection during Royal Mail and courier delivery.
Grey Mailing Bags 4.5×7" (114×178 mm) – compact, quick to pack, everyday tough
Grey mailing bags 4.5×7" (114×178 mm) are a smart choice for small items that still need privacy and protection. Made from 60-micron LDPE, they’re moisture-proof (water-resistant) with a fast self-seal strip, keeping orders tidy from bench to doorstep.
Need a different fit or colour? See all Grey sizes, explore our Mailing Bags Collection, or browse Coloured Mailing Bags to match your brand style.
Why this 4.5×7" size?
Perfect when you don’t want to waste space or postage. This footprint suits A6+ packs, small accessories and samples. The opaque grey film hides contents and resists scuffs, so your parcels look clean and professional.
Real use examples (what typically fits)
- Jewellery & accessories: earrings, bracelets, hair clips, phone cases.
- Beauty & wellness: small cosmetics, sample sets, nail kits.
- Stationery: A6 cards, stickers, notepads, refills, cables.
- Spare parts & hobby: components, fittings, craft supplies in inner sleeves.
Fit & packing guidance
- Best fit: A6 cards, cosmetics, jewellery boxes, small accessories.
- Too tight? Step up to 6.5×9" for extra room.
- Use an inner sleeve: add a bubble or paper sleeve for sharp corners.
- Press out air: flatten before sealing so labels sit flat and scan first time.
Key benefits
- Self-seal, tamper-evident closure for rapid packing.
- 60-micron co-extruded film helps resist tears, splits and scuffs.
- Moisture-proof / water-resistant outer for wet routes.
- Opaque grey for privacy and a clean, uniform look.
- Lightweight versus boxes — reduce postage and storage space.
- Recyclable LDPE — please remove the glue strip before recycling.
Eco & Materials
Material: 100% recycled LDPE (resin code 4), co-extruded for strength and opacity. Recyclable in many UK schemes, LDPE is accepted by supermarket soft-plastic return points — please remove the adhesive strip first. These bags are not biodegradable or compostable.
Strength & Protection
60-micron co-extruded film is puncture- and tear-resistant and moisture-proof. The self-seal, tamper-evident all-season adhesive bonds fast to keep contents secure from dispatch to delivery.
Storage & Performance
Store bags at 13–21 °C and out of direct heat/sunlight. Let cold stock reach room temperature before use to maintain adhesive performance.
Lightweight = Lower Postage
These recycled LDPE mailers are exceptionally lightweight, helping you keep parcels in lower weight bands versus boxes — simple savings without losing protection.
Size comparison (pick the best fit)
| Size | Inches | Millimetres | Typical fit |
|---|---|---|---|
| This page | 4.5 × 7" | 114 × 178 mm | A6 cards, small cosmetics, jewellery |
| Step up | 6.5 × 9" | 165 × 229 mm | More room for boxed accessories and kits |
| Bigger option | 9 × 12" | 229 × 305 mm | A4 with room, single tee, boxed cosmetics |
For flexibility, keep 6.5×9" on hand for the next size up, and 9×12" for A4-friendly orders.
Packing tips to save time and reduce damages
- Use a simple inner sleeve for powder-prone items or sharp corners.
- Seal once — the adhesive is permanent and tamper-evident.
- Apply labels on a smooth area; press firmly for reliable scanning.
- Put invoices/returns in a clear document wallet on the outside.
Build a complete packing setup
Team your grey mailing bags 4.5×7" with packaging tape for inner cartons, document wallets for paperwork, and cardboard boxes when rigid protection is needed.
| Material | LDPE (code 4) |
| Size | 4.5x7 Inch (114x178 mm) |
| Color | Grey |
| Closure | Peel-and-Seal (Permanent) |
| Recyclability | Return to Supermarket Soft-Plastic Points |
| Thickness | 60 µm |
| Water Protection | Water-Resistant |
What can I fit in a 4.5×7" grey mailing bag?
Are 4.5×7" grey mailing bags waterproof?
Will the 4.5×7" mailing bag tear or split?
Are grey mailing bags recyclable?
Are the grey mailing bags fully opaque for privacy?
Can I use 4.5×7" mailing bags with Royal Mail?
Why choose grey mailing bags?
How should I store 4.5×7" grey mailing bags?
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