Advanced Product Fields Pro for WooCommerce By StudioWombat 3.0.6

Advanced Product Fields for WooCommerce lets you add extra options to your products, like text boxes, dropdowns, swatches, images, and more.

You can choose between 16 different input types to add to your products, including: text boxes, number fields, dropdown lists, checkboxes, radio buttons, image swatches, color swatches, date fields, and file upload.