Which label format for which product?

A label format is not a matter of taste. It follows the surface you stick it to and the information the label must carry. A bottle, a pouch, a box and a shipping carton do not take the same shape — the constraint decides.

The round one, for a product seen at a glance

A 4 cm round carries a logo and a name, and nothing more. It is the format for jars, pouches and objects where the label is part of the look: it turns, it sits straight on a lid, and it takes no room.

The round format works when the label is the logo. If it must also carry an ingredient list, a volume or a date, the round becomes too small and you move to the rectangle.

The rectangle, for a product that explains itself

A 5 × 3 cm rectangle holds two lines: the product name, the volume, or a usage note. It is the format for bottles, jars and flexible pouches, where the label has to stay readable while bent around a curve.

On a surface that meets water — a kitchen bottle, a chilled item, a parcel in transit — the material matters as much as the format: a matte white vinyl holds on a wet wall where paper wears out on the first pass.

The barcode strip, for stock you count

The 50 × 30 mm rolls carry no logo. They carry a reference, a price or a barcode, printed by a thermal printer. It is the shelf-and-carton format, not the shop-window one.

The rule before you order

Measure the available surface in centimetres — width and height — then write down what the label must carry. One word: the round is enough. Two lines: take the rectangle. A code: take the strip. That sentence decides the format, not the price.