A variable product is one listing where the buyer picks an option before adding it to their cart, such as a size or a color. Each choice is called a variation, and each variation can have its own price, photo, and stock.
Example: a T-shirt that comes in Small and Large is one variable product with two variations.
If the buyer doesn't choose anything, use a simple product instead. See How to list a simple product.
Go to Products and click Add new product. Fill in the Title, Categories, and Description the same way you would for a simple product. Then:
A new product starts out set to Publish, and the Save Attributes button in Step 2 saves your whole product. Choosing Draft first keeps a half-finished listing from going live while you work.
Scroll down to Attributes. Click Add existing attribute or custom, pick a ready-made attribute such as Adult Size or Color, and click Add New. In the new row (1):
Leave Visible on the product page checked. Default Form Values is optional. It picks an option for the buyer ahead of time.
No ready-made attribute that fits? Make your own. In the Add existing attribute or custom box, choose Custom Attribute, then click Add New. In the new row:
Using more than one custom attribute? Give each one its own name before you save, such as Size and Color.
A Variations area now shows up under Attributes.
You'll get one row for every combination. Two sizes in two colors makes four rows. Each row is labeled with a number, like # 28326. To add just one variation by hand, choose Add variation instead.
Click a variation's row to open it, then fill in:
Leave Enabled checked. A variation that isn't enabled can't be bought.
Scroll down inside the same variation and finish it:
Bulk actions can save you a lot of typing. Choose an action, click Go, and type the value when asked:
In the main Shipping section of the product, fill in Weight (lbs), Length (in), Width (in), and Height (in) for the packed item. Every variation uses these unless you typed different numbers inside a variation.
Don't skip this. BlackSpace won't publish a variable product until it has a weight and all three measurements, either here or in every variation. They also decide what buyers pay for shipping.
For how to measure and weigh the packed item, see How to measure and weigh your products for shipping.
If you deliver this product yourself and never ship it, check Local delivery only in the same section instead. It doesn't need a weight or measurements. See How to set up your shipping to turn on Local Delivery first.
When every variation has a price, photo, and description, set Status to Publish, leave Visibility on Visible, and click the button at the top right (Save Changes or Update Product).