For families with more than one vehicle, this Maxi-Cosi Peri Infant Car Seat Base is a must. Install it in a second car, then attach the compatible Peri 180 Rotating Infant 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. It also features FlexiSpin, 180-degree seat rotation technology, so getting your little one in and out of their car seat is easy with less back strain. An anti-rotation stability leg limits back and forth movement for maximum head and neck protection. TensionFix red-to-green tightness indicators provide visual confirmation of accurate installation, whether using vehicle belt or LATCH installation. The stay-in-car 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.