Mailing Bags for Every Dispatch – Strong, Recycled, Self-Seal Postal Packaging
Grey Mailing Bags 28×34" (711×864 mm) – Self-Seal Postal Bags
Regular price £35+
Clear Garment Bag - Carbon Neutral CPP Clear Bags 12x16 Inch - Pack of 2000
Regular price £71.99
Clear Garment Bag - Carbon Neutral CPP Clear Bags 10x14 Inch - Pack of 2000
Regular price £59.99
Clear Garment Bag - Carbon Neutral CPP Clear Bags 6.5x9 Inch - Pack of 2000
Regular price £29.99
Clear Garment Bag - Carbon Neutral CPP Clear Bags 8x10 Inch - Pack of 2000
Regular price £39.99
Clear Garment Bag - Carbon Neutral CPP Clear Bags 9x12 Inch - Pack of 2000
Regular price £49.99
Why Choose Mailing Bags for E-Commerce Dispatch
Mailing bags (also called postal bags or postage bags) are the go-to choice for online sellers, boutiques and fulfilment teams because they are light, tough and fast to pack. A strong 60 µm LDPE film helps resist tears and punctures in transit, while the moisture-proof / water-resistant surface keeps parcels dry during courier handling and rain exposure. The fully opaque finish protects customer privacy, and the tamper-evident self-seal strip gives you a clean, professional send without extra tape.
Compared with boxes, mailing bags reduce volumetric weight and cut postage costs – ideal for clothing, soft goods, accessories, fabrics, shoes, gifts and general retail dispatch.
Types of Mailing Bags: Strength, Colour, Presentation
Heavy-duty grey mailing bags are the workhorse option for warehouses, subscription brands and marketplace sellers. Made from 60 µm recycled LDPE (code 4), they are tough, opaque and built for daily use on the packing bench. See the full range in our Grey Mailing Bags collection – from compact 4.5×7″ pouches up to extra-large 28×34″ sacks for bulky items.
Coloured mailing bags in pink, purple, green and blue deliver a branded unboxing feel for fashion, gifts and boutique orders. These come in core e-commerce sizes – 10×14″, 12×16″, 15×18″ and 17×22″ – and are also available in cost-saving assorted 100 packs (25 bags of each size) so smaller sellers can test colours and sizes without holding heavy stock.
Need clear protection for garments inside the parcel? Explore our Clear Garment Bags range. These CPP film bags are smooth, resealable, FBA compliant and supplied with multi-language safety print. Ideal for clothing, textiles and presentation inside your main mailing bag.
How to Choose the Right Size Mailing Bag
Pick the smallest bag that fits your item with a little spare room to fold, seal and keep shape. As a guide:
- 10×14″ (254×355 mm) – T-shirts, light tops, small fashion orders.
- 12×16″ (305×406 mm) – jeans, jumpers, folded outfits.
- 15×18″ (381×457 mm) – hoodies, multiple garments, bulkier soft goods.
- 17×22″ / 17×24″ (432×559 mm / 432×610 mm) – shoe boxes, coats, padded items.
- 28×34″ (711×864 mm) – very large parcels and boxed goods.
For high-volume dispatch, you can download our full size chart (PDF) for a quick reference of internal measurements and common uses.
Recycling, Materials & Sustainability
Our grey and coloured mailing bags are made from 100% recycled LDPE (code 4) and are recyclable where soft-plastic collection points exist. Most major UK supermarkets and local waste centres now accept this material. You can check locations via Recycle Now. Reuse is encouraged: many customers re-use our bags to return items because the film is tough enough to survive a second journey.
The lightweight build helps cut fuel and postage cost compared with rigid cartons. This reduces packaging waste and decreases the overall carbon impact per parcel sent.
Trade Supply, Bulk Discounts & Next-Day Dispatch
All stock is held in the UK for same-day dispatch before 3 pm (Mon–Fri), with DPD next working day on orders over £100 (UK Mainland). We support e-commerce brands, subscription services, warehouse operations and marketplace sellers with bulk discounts, tiered pricing, VAT invoices and consistent repeat supply. Need tape, boxes or fillers on the same order? Add our Packaging Tape, Cardboard Boxes and Paper Bags to build a complete packing bench in one delivery.
Trusted by UK retailers and online sellers every day – secure parcels, clear presentation and lower postage cost, all from one supplier.
Mailing Bags – Common Questions & Helpful Buying Guide
Find clear answers about mailing bags – from choosing the right size and material to understanding recycling, water resistance and trade supply. This quick guide covers both grey and coloured mailing bags, with practical tips for online sellers, warehouses and boutique dispatch. Learn how to select the best bag for your product and post with confidence every time.
Mailing bags (also called postal bags or postage bags) are lightweight protective bags used to send orders through couriers and Royal Mail. They are ideal for clothing, soft goods, accessories, gifts, shoes, textiles and most e-commerce parcels. Each bag is moisture-proof / water-resistant, fully opaque for privacy and has a tamper-evident self-seal strip so you can pack quickly without extra tape. Because they are lighter than boxes, they help reduce postage cost and volumetric weight.
Yes. Our grey and coloured mailing bags are made from 100% recycled LDPE (code 4) and can be recycled again through soft-plastic collection schemes. Most UK supermarkets and local centres now accept this material. You can check local drop-off points using Recycle Now. For best results, remove labels before recycling so the film stays clean.
Yes. Alongside our heavy-duty grey dispatch bags, we stock pink, purple, green and blue mailing bags. Coloured mailing bags are popular for fashion, gifts and boutique orders because they look professional when the parcel arrives and help reinforce your brand. They use the same 60 µm recycled LDPE film and tamper-evident self-seal strip as our grey bags, so you do not lose strength by choosing colour.
Choose the smallest bag that fits your item comfortably with enough spare room to fold and seal. As a quick guide:
- 10×14″ (254×355 mm) – T-shirts, light tops, small fashion orders.
- 12×16″ (305×406 mm) – jeans, jumpers, folded outfits.
- 15×18″ (381×457 mm) – hoodies, multiple garments, soft goods.
- 17×22″ / 17×24″ (432×559 mm / 432×610 mm) – shoe boxes, coats, padded items.
- 28×34″ (711×864 mm) – very large or bulky parcels.
Our grey mailing bags run from small 4.5×7″ pouches right up to 28×34″ for oversized items. You can also download our full size chart (PDF) for a detailed list of internal dimensions and typical uses.
Yes. Our mailing bags use a moisture-proof / water-resistant LDPE film that keeps parcels dry during courier handling and doorstep delivery in wet weather. They are not designed for full submersion in water but are perfect for protecting everyday parcels from rain, damp and general transit moisture.
Yes. We supply bulk and trade quantities for e-commerce brands, fulfilment centres and warehouse dispatch teams. All stock is held in the UK for same-day dispatch before 3 pm (Mon–Fri), and DPD next working day delivery is available on orders over £100 (UK Mainland). We also offer tiered pricing, VAT invoices and consistent repeat supply so you can keep packing without delays. For regular volumes or pallet quantities, contact us for trade pricing.
Yes. Mailing bags are widely used for fashion and apparel because they are lightweight, opaque and self-seal. The smooth inner film protects fabric from snagging. Many clothing sellers prefer coloured mailing bags for a branded look, while warehouse teams often choose grey mailing bags for speed, strength and cost control. For garment protection inside the parcel, add a clear garment bag.
For soft items such as clothing, most parcels can go straight into the mailing bag with no extra packaging. For fragile, heavy or sharp-edged items, add a cardboard box inside the bag or reinforce corners using strong packaging tape. This adds crush resistance and prevents the outer film from tearing during transit.
Yes. We offer mixed packs so you don’t have to buy one size at a time. These are ideal for new sellers, e-commerce boutiques and marketplace stores that ship different item types every day.
- Grey Mailing Bags Assorted Pack – 120 bags (6 practical sizes from 4.5×7″ up to 13×19″, 20 of each size). Perfect for general dispatch and everyday parcel protection.
- Pink Mailing Bags Assorted Pack – 100 bags (4 core e-commerce sizes: 10×14″, 12×16″, 15×18″ and 17×22″, 25 of each). Ideal for branded fashion orders.
- Purple Mailing Bags Assorted Pack – 100 bags (10×14″, 12×16″, 15×18″ and 17×22″, 25 of each size).
- Blue Mailing Bags Assorted Pack – 100 bags (10×14″, 12×16″, 15×18″ and 17×22″, 25 of each size).
- Green Mailing Bags Assorted Pack – 100 bags (10×14″, 12×16″, 15×18″ and 17×22″, 25 of each size).
These assorted packs give you flexible stock without over-ordering. You get all the main shipping sizes in one go, so you’re ready for small items, clothing, hoodies, footwear and bulkier parcels straight away.
Yes. Courier and thermal shipping labels adhere well to the matte LDPE surface. For best results, apply the label after sealing the bag and ensure the surface is clean and dry. Avoid placing clear tape over barcodes, as that can cause scanning issues during courier processing.