Double VPN : actual security feature or marketing gimmick? A technical breakdown
double vpn routes your traffic through two servers instead of one. the theoretical benefit : if one server is compromised, your origin ip is still protected.
the practical reality : it doubles latency, halves speed, and the threat model that requires it applies to maybe 0.1% of users.
for most people it's a checkbox that justifies a higher price tier. depends on your threat model.