CodeCanyon - WooCommerce Custom Fields v2.2.3 - 11332742

Sell customizable products and optional add-ons. Give customers more input and improve checkout experience. Streamline order processing and become more productive. Lift the limits on what you can do with WooCommerce, now. WooCommerce Custom Fields allows you to create custom product, checkout, order and user fields, provide and gather additional information in a structured way, and sell configurable products, product add-ons and extra product options. Build, manage and optimize your online store for a premium user experience, and make every field work for you.

DEMO:
https://codecanyon.net/item/woocommerce-custom-fields/11332742