This Medium sized polythene mail bag has internal dimensions of 400mm across the width or "opening" and 525mm length or "height" and is suitable for Medium Parcel Royal Mail postage tariffs.
Our polythene mailers are ideal for eCommerce and despatching a wide variety of products. Most commonly used for posting out garments and fabric products, poly mailers are also handy for wrapping awkward shapes and shoe boxes.
These polythene envelopes are very strong, completely waterproof and tearproof and are manufactured from 100% recycled plastic in the UK. They're also recyclable.
They have a peel and seal adhesive strip for secure closure and the adhesive strip can be adjusted to adhere to any part of the bag to enable a more flexible size to better fit your product or for using the same bag for a variety of different size requirements.
The opacity of the mailbag provides protection from light and also provides for secure shipping of product, as goods cannot be seen through the plastic.
For further information regarding postal tariffs and product size guides, please refer to our Postal Products page which highlights all of our eCommerce products and packaging solutions which are suitable for delivery through the postal service.
Whilst our recycled plastic mailers have self seal pealable adhesive strips, you may wish to consider our PP or PVC tapes for additional security or our printed Fragile tape to alert people to the content.