Grey Mailing Bags 6.5×9" (165×229 mm) – compact, quick to pack, everyday tough

Grey mailing bags 6.5×9" (165×229 mm) are the neat step up from 4.5×7" when you need more room without extra weight. Made from tough 60-micron LDPE, they’re moisture-proof (water-resistant) with a fast self-seal strip and opaque privacy film for clean, professional parcels.

Need a different fit? See all sizes or browse the full Mailing Bags range.

Why this 6.5×9" size?

Great for A5+ packs, boxed accessories and small kits. The footprint reduces void space compared with 9×12", keeping postage costs down while still fitting small retail cartons, cosmetics and gift items.

Real use examples (what typically fits)

• Beauty & wellness: boxed skincare, serums, palettes, nail kits.
• Accessories: phone cases, cables, small tool sets, jewellery boxes.
• Stationery: A5 notebooks, cards, refills, sticker packs.
• Hobby & parts: components, craft supplies, hardware in inner sleeves.

Fit & packing guidance

• Best fit: A5 items, boxed cosmetics, small accessories, sample kits.
• Too tight? Step up to 9×12" for A4-friendly orders.
• Too roomy? Step down to 4.5×7" to cut void space.
• Corner care: use a light inner sleeve for sharp retail boxes.
• 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 4.5×7" for smaller items, 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 6.5×9" big enough for A5 items?

Yes — it fits A5 (148×210 mm) with room for a sleeve or small box.

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 6.5×9" 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 6.5×9" 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.