Choose the size around the packaging
Measure the box, bag or envelope where the card will sit. A small insert can look deliberate inside a compact jewellery box, while a larger parcel may need a different proportion. Consider whether the card should lie flat, sit above tissue or slip into a product sleeve. Leave enough room for the packer to place it without bending a corner.
A6 and A7 are familiar starting points for discussing a printed card, but a standard size is not a requirement. Ask for a custom format if it improves the fit. The quotation should specify the finished dimensions, rather than just a name such as small or postcard size.

