Collection: Royal Mail Small Parcel Sized Packaging - PIP (Pricing in Proportion)

This collection is sized to fit the Royal Mail Small Parcel format, maximum 450 x 350 x 160mm, giving you more depth than a large letter while staying on the lower parcel rate. Parcelsend stocks these boxes and mailers in the UK for same-day despatch. If your item is flatter, check our Royal Mail Large Letter sized packaging instead.

How to choose the right Small Parcel packaging

Royal Mail Small Parcel allows up to 450 x 350 x 160mm once packed and sealed, so this format suits boxed items with a bit more bulk than a letter or padded mailer can hold.

Boxed items with depth

Small retail products, multiple items bundled together, or anything that needs a rigid box rather than a flexible mailer will typically fall into this size band.

Staying within the size limit

Measure the outside of your box once it's packed and taped, as the 160mm depth limit applies to the finished parcel, not the flat-packed box.

Why order Small Parcel packaging from Parcelsend UK

These stock lines are held in the UK and despatched same-day before our daily cut-off, with volume pricing for regular senders and free UK delivery over £100. If your item is bulkier still, see our Royal Mail Medium Parcel sized packaging, or browse the wider mailing boxes and cartons range.

Key takeaways

• Royal Mail Small Parcel allows a maximum size of 450 x 350 x 160mm.
• This band suits boxed items too bulky for a large letter mailer.
• Measure the packed, sealed parcel rather than the flat box.
• All lines are UK-stocked for same-day despatch before the daily cut-off.
• Volume pricing is available, with free delivery on UK orders over £100.