YiThemes - YITH WooCommerce Product Add-Ons v1.2.5 | 1,17 MB
Product variations don't always satisfy the customers' needs. Imagine selling wedding rings. The one who purchases them has a specific need (togli la s in needs), such as the possibility to add a brief sentence or to choose weight, color, size and sparkle. These parameters are difficult to be implemented in a product and they would cause a price change according to users' chosen combinations.
DEMO:
https://yithemes.com/themes/plugins/yith-woocommerce-product-add-ons/