Mullvad is a small but reliable VPN provider based in Sweden. They offer 82 servers in 20 countries across the globe, providing fast, secure and unrestricted internet connections to their users. Mullvad is particularly committed to preserving their users' privacy and anonymity.
Pro No logs are kept
According to Mullvad, they retain no traffic information or metadata. Here is their statement in 2014 when inquired by TorrentFreak if they store any logs that would enable linking an IP address and a timestamp to a user:
No. This would make both us and our users more vulnerable so we
certainly don’t. To make it harder to watch the activities of an IP address from the outside we also have many users share each address, both for IPv4 and our upcoming IPv6 support.