For families with more than one vehicle, this car seat base from Maxi-Cosi is a must. Install it in a second car, then attach a compatible Maxi-Cosi car seat (sold separately) and be on your way. The base is adjustable to ensure a proper fit in your vehicle, with a self-retracting one-click LATCH system for easy installation. An anti-rotation stability leg limits back and forth movement for maximum head and neck protection. The red-to-green tightness indicators provide visual confirmation of accurate installation, whether using vehicle belt or LATCH installation. The base also features an integrated belt lockoff for easy and secure seat belt installation, so you'll feel confident when it's time to hit the road.