Royal Mail base their postal charges on size as well as weight, and have recently introduced some new sizes.   Ensure you keep your postage costs to a minimum by selecting the most suitable products from our range.  Prices for 1st Class & 2nd Class mail are the same no matter where you’re sending in the UK.  The amount you pay depends simply on the size and weight of the item you’re sending.

If you click on the pictures below (the grey coloured pics of the envelopes), a page listing all sizes * of mailing bags and postal bags will appear, which will fit within that catergory.  Please also bear in mind our manufacturing tolerances and be sure to check the size of the mailing bag you choose.

We recommend you try a sample first which we are happy to provide free of charge

* - Please note there may be some sizes listed which are not suitable

View of someone posting a package into a letter box



Max - Weight

Max - Length

Max - Width

Max - Thickness

Letter - Greetings cards, personal letters, postcards
100g 24cm 16.5cm 5mm
Large letter
Large Letter - A4 documents, CDs/DVDs in their cases, t shirts, large greeting cards with badges and magazines
750g 35.3cm 25cm 25mm

Small parcel
Small Parcel Wide Option
- Handbags, clothing, board games

Small parcel - deep - icon

Small Parcel Deep Option - Shoes, boots, toasters, irons

















Medium parcel
Medium Parcel
- Gifts, shoes, heavy or bulky items
20kg 61cm 46cm 46cm

Rolled and cylinder shaped parcels

For rolled and cylinder shaped items, the length of the item plus twice the diameter must not exceed 104cm, with the greatest dimension being no more than 90cm. Rolled and cylinder shaped parcels that measure up to 45cm in length and 8cm in diameter and do not exceed 2kg can be sent as small parcels.

Exceptions apply

Parcels that do not exceed 16cm in length and 16cm in width and 16cm in depth can be sent as small parcels, provided the weight does not exceed 2kg.  Parcels greater in size than 61cm x 46cm x 46cm or heavier than 20kg can be sent using a dedicated courier network service like Interlink Express services which include tracking on a next day service

You can find more information on the Royal mail website by following the link below:



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