Purchase an additional base for your Fit360 Rotating Convertible Car Seat (sold separately). With secure, one-time installation, the second base can be used in another vehicle allowing you to move the Fit360 rotating car seat from base-to-base. Installing the Fit360 base into your vehicle is as simple as open-route-close with innovative one-time LeverLock seat belt installation. Open the LeverLock door on the Fit360 base and route the seat belt using the easy-access belt guides. The car’s shoulder and lap belts follow their natural path through the guides for trouble-free belt routing. The built-in LeverLock self-tensioning lock system offers superior stability with three points of contact for continuous use from rear-facing through forward-facing usage. By simply closing and latching the LeverLock door, the vehicle belt is tightened in a way that eliminates any movement from front-to-back or side-to-side. This provides a secure installation with minimal effort, ensuring reliable stability over time. Top tether can be used in both rear-facing and forward-facing travel. Two RideRight bubble level-indicators work in tandem with the 6-position ReclineSure leveling system to provide improved vehicle fit and child comfort. The six recline positions allow you to select the ideal seating angle for your child during installation that will provide peace of mind throughout the duration of use. Once the base is installed in your vehicle, insert the Fit360 seat into the base, secure your child and rotate into a ready-to-ride position. The visual red and green ready-to-ride indicators assure the Fit360 rotational car seat is installed securely in your vehicle and is in either a rear-facing or forward-facing ready-to-ride position.