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? See all sizes or browse the full Mailing Bags range.

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.

Specifications

Eco & Materials

Material: 100% recycled LDPE (resin code 4), co-extruded for strength and opacity. Recyclable in many UK schemes — 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)

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.

FAQs

Is 4.5×7" big enough for A6 cards?

Yes — it fits A6 (105×148 mm) with room for a sleeve.

Are these bags waterproof?

They’re moisture-proof / water-resistant. For very wet routes, add an inner sleeve.

Are they recyclable or biodegradable?

They are recyclable in many UK schemes — remove the glue strip first. They are not biodegradable or compostable.

What thickness is this size?

This 4.5×7" bag is produced at 60 µm for strength with low weight.

How should I store them?

Keep stock between 13–21 °C and out of direct heat/sunlight. Let cold packs acclimatise before use.

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. See more colours and sizes in the Mailing Bags collection.