Product variants

What product variants are

Product variants are the versions of an item, such as size, colour or model. The legal and operational classification matters: every variant is a separate sellable unit with its own stock, its own price and its own item number. The product is only the frame around them.

That distinction has consequences for almost every area. Stock is kept per variant, the order references a variant, the invoice names a variant, and search has to decide which variant it shows.

How variants are built

Two routes are common. The first is the variant axis: a property such as size is defined with its values, and the shop generates all combinations from it. The second is free creation, where every variant is maintained individually. The first route is faster with many combinations, the second with single pieces and special cases.

What has to be settled first is which property defines the variant and which is only an attribute. A material that differs only in the description but is never selectable does not belong in the variant logic, otherwise combinations appear that do not exist.

What variants mean for operations

• Stock: if stock is kept on the product, the shop can sell the wrong variant. It has to be kept per variant.
• Prices: variants can have their own prices. Where that is not maintained, the product price applies and the margin is wrong.
• Images: one image per variant, for instance per colour, is almost indispensable in fashion and often unnecessary for technical goods.
• Search and filters: variants produce many addresses for similar content. Without a rule on which address is canonical, they compete with each other.
• Analysis: sales per variant show which colour or size actually moves. That is one of the most solid bases for assortment decisions.

Where it typically goes wrong

The first point is numbering. Anyone adding a variant later and reassigning the number can no longer match old orders. Numbers therefore stay assigned permanently.

The second point is sold out variants. A variant without stock is often hidden, which changes the address and loses a page in search. Showing it with a note on unavailability is better, so the address remains.

The third point is the description. With variants that differ in properties, such as a different size with different accessories, the description has to differ per variant. A shared description leads to enquiries and returns. The fourth point is quantity. More than three variant axes produce so many combinations that the shop becomes confusing and hardly anyone maintains all of them.

Frequent questions

• How many variant axes make sense? Two, in exceptional cases three.
• Does every variant need its own image? Only when the appearance differs.
• What is the most common mistake? Stock kept on the product instead of the variant.