Mailing Bags

RAJAPACK UK’s mailing bags range helps e-commerce, fulfilment and despatch teams get clothing, soft goods, and non-fragile orders out the door quickly, safely and at the lowest cost per parcel. From lightweight poly mailers and grey plastic mailing bags to paper alternatives, our parcel bags cover everything you need to pack, protect and post soft or non-fragile goods.

Whether you are despatching folded garments through a courier network, protecting subscription-box contents from the weather, or packing bulky multi-item orders for Royal Mail, our mailing bags are built for daily, high-volume despatch. Each grade is selected for its tear resistance, waterproofing and tamper-evident seal, so orders arrive intact, returns stay low and your packing bench keeps moving through peak. For smaller e-commerce goods such as makeup, CDs, DVDs, and small tech devices, Jiffy bags are the more appropriate choice.

Our range covers:

• Plastic mailing bags and poly mailers - made from low-density polythene (LDPE), ideal for clothing, textiles and standard e-commerce fulfilment, choose between grey, white, black mailing bags, silver mailing bags and blue mailing bags.
• Grey mailing bags - the default choice for garment and general e-commerce despatch, with high-opacity polythene and available in a variety of sizes, from 250 x 350mm to 850 x 1,050mm.
• Clear mailing bags - made from transparent film for mailshots, promotional despatch, and pick-and-pack lines where contents need to be visible.
• Poly mailers with handles - polythene mailing bags with integrated handles for customer convenience at the point of delivery.
• Heavy duty white mailing bags - stronger 70 micron polythene material ideal for rough handling in transit, ensuring that your items reach their destination safely.
• Kraft paper mailing bags - kerbside-recyclable postage bags for plastic-free despatch of clothing and soft goods.
• Custom printed mailing bags - grey, white, and coloured bags printed with your branding, returns information or address labelling.

Key features and benefits:

• Protect orders in transit - waterproof LDPE polythene and a tamper-evident peel-and-seal keep contents dry, hidden, and secure from packing bench to doorstep.
• Cut your cost per parcel - plastic mailing bags are the lowest cost-per-unit flexible despatch format, ideal for high-volume fulfilment.
• Speed up your packing bench - lightweight poly mailers and self-seal closures let despatch teams pack more orders per hour, with no tape or void fill needed.
• Match the bag to the load - a variety of micron grades available to cover everything from lightweight mailshots to heavy, multi-item garment orders.
• Ship soft goods and non-fragile items - the right format for clothing, textiles and e-commerce orders that do not require cushioning.
• Meet your sustainability goals - choose eco friendly mailing bags containing 30% to 100% recycled content, or switch to plastic-free paper and Kraft mailing bags for kerbside recyclability.
• Put your brand on the parcel - grey, white, black, silver, and coloured finishes, plus custom-printed options, turn a mailing bag into a branded touchpoint.

Choosing the right mailing bag:

When selecting parcel bags or mailing bags for your operation, consider:

• Load type & weight - match the type of mailing bag to the goods you are shipping. Light mailshots, clothing, and soft goods all require different material grades. Choosing a grade too light for the load is a primary cause of damage during transit and seal failure.
• Waterproofing vs recyclability - polythene is fully waterproof but not kerbside recyclable; paper and Kraft mailing bags are moisture-resistant and kerbside recyclable. Choose on which matters more to you and your customers.
• Size & opening width - always check the internal opening width, not just the height. Forcing a folded garment through a too-narrow opening puts the side seam under tension and causes tears in transit.
• Security & branding - opaque grey, black and silver conceal contents; white and clear serve printing and visibility needs; custom print carries your brand exterior.
• Volume & cost per unit - at high throughput, cost per parcel and packing speed matter more than headline unit price, and poly mailers win on both.

Examples include:

• Grey mailing bags are the default for clothing and general e-commerce despatch.
• Clear packaging bags suit mailshots and pick-and-pack lines where contents must be visible.
• Paper and Kraft mailers suit brands that need plastic-free, kerbside-recyclable despatch.

FAQs

What are mailing bags used for?

Mailing bags, also called parcel bags, poly mailers or postage bags, are flexible plastic or paper bags used to despatch clothing, soft goods and non-fragile e-commerce orders by courier or Royal Mail. They protect contents from moisture and tampering at the lowest cost per parcel.

Are grey or clear mailing bags better for clothing?

Grey polythene mailing bags are the right choice for clothing: they are opaque and correctly weighted for garments. Clear 38 micron bags are thinner and designed for mailshots, so they are not suited to garment despatch.

Can plastic mailing bags be recycled?

Not in standard kerbside collections. Polythene mailing bags, including recycled-content grades, recycle via specialist plastic film collection at most large UK supermarket front-of-store points. If you need kerbside recyclability, choose paper or Kraft mailing bags.

Do mailing bags work for Royal Mail and courier despatch?

Yes. Polythene and paper mailing bags are accepted by Royal Mail and all major UK couriers for soft goods and non-fragile items within standard size and weight limits. Place the address label on a flat, smooth area of the bag for reliable scanning.

What is the difference between plastic and paper mailing bags?

Plastic (LDPE) bags are fully waterproof and the lowest cost per unit, but not kerbside recyclable. Paper and Kraft bags are moisture-resistant, have a marginally higher cost and are kerbside recyclable with cardboard. Both are approved by Royal Mail and couriers for soft goods.

Where can I buy postal bags?

You can purchase postal bags here at RAJAPACK UK. You will find a wide range of paper and plastic postal bags, available in sizes to suit everything from letterbox-friendly items to large parcels.

Send every order safely with RAJAPACK UK

From grey plastic mailing bags to plastic-free paper alternatives, RAJAPACK UK supplies durable, waterproof, and recyclable parcel bags that protect every order throughout transit to ensure they reach their destination safely along with cutting your cost per parcel. Contact our packaging experts today for tailored recommendations on the right micron grade, size, and format for your business.