The term 'It's a Lifesaver' can be broken down into two crossword solutions: NET (3 letters) and SEATBELT (8 letters). NET is an abbreviation for 'NETWORK, ' which is a system of computers, servers, and other devices that are connected to each other and can share data. SEATBELT is an important safety device used in cars and other vehicles to protect passengers from injury in the event of a crash. Together, these two solutions represent the importance of both technology and safety in our lives.