A list of variant objects, each one representing a slightly different version of the product. For example, if a product comes in different sizes and colors, each size and color permutation (such as "small black", "medium black", "large blue"), would be a variant.

To reorder variants, update the product with the variants in the desired order. The position attribute on the variant will be ignored.

barcode: The barcode, UPC or ISBN number for the product.
compare_at_price: The competitor's price for the same item.
created_at: The date and time when the product variant was created. The API returns this in ISO 8601.
fulfillment_service: Service which is handling fulfillment. Valid values are: manual, gift_card, or the handle of a FulfillmentService.
grams: The weight of the product variant in grams.
weight: The weight of the product variant in the unit system specified with weight_unit.
weight_unit: The unit system that the product variant's weight is measure in. The weight_unit can be either "g", "kg, "oz", or "lb".
id: The unique numeric identifier for the product variant.
inventory_management: Specifies whether or not Shopify tracks the number of items in stock for this product variant.
inventory_policy: Specifies whether or not customers are allowed to place an order for a product variant when it's out of stock.
inventory_quantity: The number of items available to the product listing for the product variant.
metafield: Attaches additional information to a shop's resources.
option: Custom properties that a shop owner can use to define product variants. Multiple options can exist. Options are represented as: option1, option2, option3, etc.
position: The order of the product variant in the list of product variants. 1 is the first position. To reorder variants, update the product with the variants in the desired order. The position attribute on the variant will be ignored.
price: The price of the product variant.
product_id: The unique numeric identifier for the product.
requires_shipping: Specifies whether or not a customer needs to provide a shipping address when placing an order for this product variant.
sku: A unique identifier for the product in the shop.
taxable: Specifies whether or not a tax is charged when the product variant is sold.
title: The title of the product variant.
updated_at: The date and time when the product variant was last modified. The API returns this in ISO 8601.