Is it possible to change the shopping cart icon?

Hello! I would like, as I comment in the title, to change the shopping cart icon to a custom icon that I download. The path I’m using to do it is as follows: customize> woocommerce> shopping cart menu.
In the custom icon option it says: “Enter the class of the full icon”. : / I don’t know what you mean, could you help me? I’ll be very greatful.
Note: I am using ocean wp theme