The customization we have applied for this product using metafields is a custom share title, share image, Pinterest share image and hashtags.
For our share images we have combined both product images using photoshop. The Pinterest image is a portrait image with the dimensions of 600x900px. We have then rotated this image to display as a large thumbnail share on Facebook and Twitter with the dimensions of 1200x630px.
Use the Facebook, Twitter and Pinterest share buttons below for a demonstration of our customizations.