Follow the steps below to install and purchase the Vetro theme from the official Shopify Theme Store.
Go to the Shopify Theme Store and search for Vetro.
Or simply click this link: Vetro theme
Click Try theme to add Vetro to your Online Store.

If you are not logged into your store yet, please sign in to continue.
In your Shopify admin, navigate to: Online Store → Themes
You will see the Vetro theme listed in your theme library.
Next to the Vetro theme, click “Buy”.

Fill in your store information, select your payment method, and click “Buy theme”.
Once the theme is purchased, the charge is non-refundable, as all billing is handled directly by Shopify.