Polythene Mailers - Blue
No03 Tourer Blue Opaque Poly Mailers are designed for fast, reliable dispatch of non-fragile items where privacy and presentation matter. These opaque blue polythene mailing bags help conceal contents in transit while providing a lightweight, space-efficient alternative to boxes for many everyday shipping tasks.
Built for busy packing benches, these mailers are supplied in bulk packs and are intended to streamline pick/pack operations with a simple peel-and-seal closure. They’re a practical choice for eCommerce fulfilment, mail order, and internal distribution where consistent packing speed and dependable closure are essential.
Key Features
Opaque blue film (privacy in transit):
The blue opaque material helps prevent the contents from being seen during handling and delivery, supporting discreet shipping for clothing, soft goods, and other non-breakable items.
55 micron polythene (everyday shipping strength):
Manufactured from 55mu polythene, these mailers balance durability with low weight, helping protect items from scuffs and light knocks while keeping postage-efficient packaging.
Peel-and-seal adhesive closure (fast packing):
A permanent adhesive strip enables quick sealing without additional tape for many standard dispatch workflows, improving throughput at the packing station.
Lightweight and space-saving:
Compared with rigid cartons, poly mailers store compactly and add minimal weight—useful when you’re managing storage space and shipping costs.
Clean, professional presentation:
A consistent opaque finish gives parcels a tidy appearance, supporting brand-neutral dispatch where you want a simple, uniform look.
Bulk pack supply:
Supplied in larger pack quantities to suit regular shipping volumes and reduce the frequency of reordering.
Key Features (Quick List)
- Opaque blue polythene for discreet shipping
- 55 micron film thickness
- Peel-and-seal permanent adhesive closure
- Lightweight, flexible, and space-efficient to store
- Ideal for non-fragile items such as clothing and soft goods
- Supplied in bulk packs for efficient operations
Typical Uses
- eCommerce orders (fashion, apparel, and soft goods)
- Mail order fulfilment and subscription shipments
- Warehouse-to-store transfers for non-breakable items
- Returns processing (sending replacement items or return packaging)
- Internal distribution of documents or soft items (where appropriate)
No03 Tourer Blue Opaque Poly Mailers — Full Product Guide
Choosing the right mailing bag is about matching the bag format to your product type, packing workflow, and delivery environment. No03 Tourer Blue Opaque Poly Mailers are a straightforward solution for shipping items that don’t require rigid protection but still benefit from a durable, weather-resistant outer layer and a secure seal.
How It Works
Place your item(s) inside the mailer, remove the release liner from the adhesive strip, and fold the flap down firmly to seal. The peel-and-seal format is designed to reduce packing time and help create a consistent closure across high-volume dispatch runs.
Materials and Construction
These mailers are made from polythene film with an opaque blue finish. The stated thickness is 55 micron (55mu), a commonly used gauge for general-purpose mailing bags. Polythene helps resist moisture and provides a flexible barrier that can protect contents from light rain and handling marks during transit.
Protection and Performance Expectations
Poly mailers are best suited to items that can tolerate some flexing and do not require crush protection. They can help protect against:
- Surface scuffs and abrasion during handling
- Moisture exposure from light rain or damp conditions
- General transit handling for soft or non-fragile goods
For fragile products, sharp-edged items, or goods that must not bend, consider pairing with internal protection (e.g., a board-backed insert) or using a rigid carton where appropriate.
Closure and Tamper Considerations
The peel-and-seal adhesive is intended to provide a permanent closure once applied correctly. For best results, ensure the sealing area is clean and dry, remove the liner fully, and apply firm pressure along the full width of the flap. If your process requires additional tamper evidence or you’re shipping heavier items, you may choose to reinforce with tape as part of your standard operating procedure.
Floor Type Compatibility
These mailers are designed for packing and dispatch rather than flooring. If you’re organising a packing area, they work well in environments where parcels are assembled on benches, packing tables, or conveyor lines. Keep packs stored in a clean, dry location to maintain adhesive performance.
Health and Safety
- Keep polythene packaging away from babies and young children to avoid suffocation risk.
- Use appropriate cutting tools carefully if opening cartons or trimming labels.
- Store away from heat sources and direct sunlight for prolonged periods to help preserve material performance.
Ideal Applications and Use Cases
These opaque blue mailers are commonly used for:
- Clothing and textiles: T-shirts, hoodies, leggings, scarves, and other soft garments.
- Soft accessories: Fabric items, non-breakable accessories, and bundled soft goods.
- Printed materials (where bending is acceptable): If you need bend resistance, add a stiffener insert.
- Multi-item orders: Consolidating several soft items into one parcel.
Maintenance, Cleaning and Care
Mailers are single-use packaging and do not require maintenance. For best packing results:
- Store cartons in a dry area to protect the adhesive strip.
- Avoid compressing packs under heavy loads that could crease the sealing flap.
- Use labels compatible with polythene surfaces; apply to a smooth area for best adhesion.
Case Study (Example Workflow)
Scenario: A small-to-medium online apparel retailer dispatching daily orders.
Goal: Reduce packing time while keeping parcels discreet and weather-resistant.
Approach: Staff pre-stage mailers at the packing bench, insert folded garments, add paperwork, then peel-and-seal. Labels are applied to the smooth face of the bag. The result is a consistent parcel format that stores efficiently and supports quick throughput during peak periods.
Who is it for?
- eCommerce businesses shipping soft goods at scale
- Fulfilment teams seeking a fast seal-and-ship process
- Retailers wanting discreet, opaque packaging for customer privacy
- Operations looking to reduce storage space compared with cartons
Colours / Features Available
This listing is for blue opaque polythene mailers. Opaque mailers are chosen when you want to conceal contents and maintain a uniform parcel appearance.
Sizes Available
This product page may represent a range within the same mailer family. Select the size/variant that best fits your typical order profile, allowing enough room for the contents and any paperwork while avoiding excessive empty space.
Tip: If you’re between sizes, consider whether your items are bulky (e.g., thicker garments) and whether you include inserts such as returns paperwork—then choose the variant that seals comfortably without overstuffing.