TunnelBear is a virtual private network (VPN) service that provides users with online privacy and security by encrypting their internet connection. It allows users to browse the internet anonymously, protects personal data from hackers and trackers, and bypasses geographical restrictions by allowing access to content from different locations. Subscription features typically include a secure and private connection, access to a network of servers in multiple countries, no logging of user activity, and apps for various devices such as computers and smartphones.