How to package your Duplo

There's no need to sort by colour, piece type, or set. Tip it all into a bag or box together, just as it comes out of the toy box.

Have a scan through for anything that isn't genuine LEGO Duplo — clone brands, regular-size LEGO, or other toys that might have got mixed in over the years.

Not required, but appreciated — a quick rinse in warm soapy water (or a spin on the top rack of the dishwasher, no heated dry) gets rid of the worst of the grime. Clean pieces are quicker for us to check.

Duplo is chunky and fairly hard-wearing, but a box that's falling apart can still split in transit. A used but solid cardboard box is perfect — no need to buy anything new.

Once everything's in the bag, pop it on the scales one last time so the weight you post matches the weight you got your offer for. If it's a bit different, that's fine — we'll always confirm the final weight and price when it arrives.

Tape all the seams firmly so nothing can work its way loose or fall out in transit.

If you're reusing a box, peel off or cover any old shipping labels and stickers so the courier scans the right one.

Once you've accepted your offer we'll email a free prepaid label with a QR code. Stick it on flat and make sure no tape covers the QR code or barcode.

Please send your parcel within 5 days of accepting your offer, so we can weigh it and get your payment out promptly.

A worn, thin, or previously crushed box is more likely to fail in transit — especially with the weight of loose bricks in it.

A single plastic bag isn't enough on its own — always put it inside a proper box or a strong, sealed postal bag so it survives handling.

Anything that isn't genuine LEGO Duplo can't be included in your offer and won't be sent back, so it's worth a quick check before you seal the box.

Leftover shipping labels from a previous parcel can send your box to the wrong place — always remove or cover them.