Rear-Facing from Day 1 to Year 2The Fit2® Base is designed for use with the Fit2® Car Seat, a first-of-its-kind rear-facing car seat designed with two unique positions to accommodate infants and toddlers, making it easy to stay rear-facing for the first two years. A built in stage-position lever lifts easily to convert the car seat base from Stage 1 to Stage 2 with one motion, creating extended leg room and more upright, spacious seating for growing toddlers.