Meet the coolest hangout in town, the Maxi-Cosi Pria Chill Convertible Car Seat. It's equipped with VentMax technology, an integrated, automatic fan system with sensors that engage fans to circulate air on hot days. The VentMax system is also water-resistant, super quiet and shuts off when the car power port does. Special open-cell padding and soft, breathable mesh fabric enhance airflow and comfort. This convertible design includes rear-facing, forward-facing and booster seat options to grow with babies to big kids. Raise the integrated QuikFit headrest and harness system with one hand to perfectly fit your little one as they grow. It's equipped with ClipQuick (a 1-handed magnetic chest clip) and harness holders to make it quicker and easier getting in and out of the car, and the seat's adjustable ReclineFit provides three positions for a more relaxing ride. The infant pillow and cushions offer extra support, plus they can be removed without rethreading the harness. And the PureCosi fabrics and padding—made without wool or added fire retardant treatment—are machine washable and dryer safe.