Founded in 2010, VPNJack aims for simplicity as a VPN service provider. They have servers based in multiple locations in the USA-but they don't say how many, which isn't as transparent as we'd like from a VPN. With a top-level vendor like ExpressVPN, you can simply search on their website to see the numbers of servers available in different locations.
Subscribing to VPNJack lets you connect to a VPN...