Bubble bag mailers combine a protective bubble-lined interior with a self-seal outer, providing cushioning protection for fragile, scratch-sensitive and lightweight items throughout transit. Available in over 25 products across over 25 sizes, they are the standard dispatch format for e-commerce, gifts, books, DVDs, stationery, cosmetics, jewellery and accessories.
Interior bubble lining cushions contents against impact and vibration. The outer is waterproof, protecting against moisture contact during delivery. All sizes are peel & seal for fast, consistent dispatch without additional equipment.
Choosing the Right Bubble Mailer Size
Bubble mailer dimensions are quoted as external measurements. The usable internal space is smaller — typically 20–30mm less on each dimension once the bubble lining is accounted for. Measure your product flat and add 20–30mm on each side. For Royal Mail Large Letter postage (maximum 353 x 250mm, 25mm depth, 750g), choose a mailer where the packed thickness will remain under 25mm.
Royal Mail Postage Bands for Bubble Mailers
- Large Letter — maximum 353 x 250 x 25mm, under 750g. Smaller mailers with lightweight contents only; the mailer itself adds depth.
- Small Parcel — maximum 450 x 350 x 160mm, under 2kg. Covers most standard bubble mailer sizes when filled.
Benefits of Bubble Bag Mailers
- Bubble cushioning — interior lining protects fragile and scratch-sensitive items against impact throughout transit.
- Waterproof outer — exterior surface protects against moisture and light rain contact during delivery.
- Peel & seal — permanent self-adhesive closure for fast, consistent dispatch.
- Lightweight — significantly lighter than rigid box alternatives, keeping postage within small parcel thresholds.
- over 25 sizes — from compact jewellery and accessory formats through to large clothing and book sizes.
Frequently Asked Questions
What can bubble bag mailers be used for?
Bubble bag mailers are suitable for fragile, scratch-sensitive and lightweight items: books, DVDs, CDs, jewellery, cosmetics, phone accessories, small electronics, greeting cards, stationery, clothing accessories and any item where cushioning protection is needed but a full rigid box is not required.
Which bubble mailer sizes qualify for Royal Mail Large Letter postage?
Royal Mail Large Letter requires the packed item (including the mailer) to be under 353 x 250mm, no more than 25mm thick and under 750g. The bubble lining of a mailer typically adds 5–8mm to the packed thickness. For Large Letter eligibility, choose a mailer in the smaller size range and ensure your product compresses within the 25mm depth limit. Always weigh and measure the packed item — do not assume the mailer size alone determines the postage band.
Are bubble bag mailers recyclable?
Standard bubble bag mailers combine a plastic outer and bubble inner, which makes them difficult to recycle in standard kerbside collections. They can be taken to supermarket soft plastics recycling points in many areas. Eco-friendly bubble mailers made from recycled materials are available within the range — see the Recycled & Eco Friendly Bubble Bag Mailers collection.
What is the difference between bubble bag mailers and Jiffy bags?
'Jiffy bag' is a brand name commonly used as a generic term for padded mailers. True Jiffy bags typically have a kraft paper outer with a shredded paper or bubble inner. Bubble bag mailers have a polythene outer with a bubble polyethylene inner — lightweight, waterproof and with a cleaner appearance. Both provide cushioning protection; bubble mailers are generally preferred for e-commerce dispatch where a neat, branded appearance matters.
