When product availability relies on knowing a combination of two attributes, such as a specific fabric and size, this is a must-have feature. With this feature, the choices available for the second attribute are dependent upon which first attribute is chosen.

Example 1:

In the first example, the customer first chooses a fabric. Size options then shown will be the sizes available in the chosen fabric.

Example 2:

In this example, the colors available for these dress shirts are dependent upon which fabric the customer chooses. If the customer selects the Oxford Cloth fabric, they will be given a different selection of colors than if they choose Non-Iron fabric.