Sling.tv is a popular on demand streaming service which is normally only available to subscribers in the USA. Sling carries all of the major USA cable channels, including sports, and has several packages starting from $25 per month (with a free 7 day trial).
By connecting to the VanishedVPN USA servers, you get a U.S. IP address. That way, you appear as if coming from the U.S. to Sling and can stream your favourite videos.
Simply follow these instruction:
Using a VPN is completely legal. It is not going to get you in trouble with authorities.