White Bubble Envelope Kraft Padded Mailer 230mm x 335mm

White Bubble Envelope Kraft Padded Mailer 230mm x 335mm

10
£5.99
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White Bubble Envelope Kraft Padded Mailer 230mm x 335mm

White Bubble Envelope Kraft Padded Mailer 230mm x 335mm

£5.99
Mailing Pack Quantity

Protect delicate shipments with these premium white kraft padded bubble mailers, engineered with internal 4mm barrier air cellular cushioning for reliable impact defense. Crafted with a 110 GSM PE-coated kraft exterior and a seamless bottom, each envelope provides water-resistant protection while remaining lightweight to help reduce postage costs.

Featuring high-slip internal lining for quick and effortless packing, these mailers include a tamper-evident hot-melt self-seal adhesive strip that secures contents firmly without requiring additional tape or staples.

Key Features

Product Type Bubble Envelope
Internal Dimensions 230 mm x 335 mm
Size Reference Featherpost F3
Material 110 GSM Kraft Paper with PE Coating
Cushioning 4 mm Air Cap Bubble Lining
Closure Type Hot-Melt Self-Seal Strip
Color White
Water Resistance Water-resistant PE Coating

Highlights

  • Internal Diameter: 230mm x 335mm (Size Reference: Featherpost F3)
  • Largest letter size
  • Premium Quality 110GSM Kraft Paper with PE Coated
  • 4mm Barrier bubble cushioning for product safety
  • High-Slip Air Cap Cushioning Material for faster and easy product insertion
  • Adhesive Hot-melt self-seal closure to ensure padded bags remain closed during the mailing cycle

Sizing & fit

Internal dimensions are 230 mm x 335 mm (Featherpost F3 reference), accommodating documents, books, and delicate flat or semi-flat items up to those dimensions.

How to use

Insert your items smoothly into the high-slip interior, peel off the protective backing from the self-adhesive strip, and press down firmly across the flap to securely seal the envelope.

Frequently asked questions

What are the internal dimensions of this bubble envelope?

The internal dimensions are 230 mm by 335 mm, equivalent to a standard Featherpost F3 size reference.

How does the envelope seal?

It features an integrated hot-melt adhesive self-seal closure strip, eliminating the need for packing tape or staples.

What type of cushioning is used inside?

The interior is lined with 4 mm barrier air bubble cushioning with high-slip material for easy item insertion and impact protection.

Are these padded mailers water-resistant?

Yes, they are made with a PE-coated 110 GSM kraft exterior and an internal bubble sheet that provide water-resistant protection.

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