We are selling our baby's car seat including base. He has already outgrown the car seat. We have thoroughly cleaned the car seat . We bought this car seat at Nordstrom and was very satisfied with our purchase. My son was very comfortable on long rides. For more info you can go to: Check out this UPPAbaby 2017 MESA Infant Car Seat from Nordstrom: {url removed}. Regular price is 299.00 MESAs integrated headrest design keeps an infant?s head stationary during a side impact collision resulting in up to 4X better HIC (Head Injury Criterion) score than other premium infant car seat brands. MESA is the only infant car seat with a unique technology utilizing a tightness indicator and self-retracting LATCH connectors for fast, accurate and easy installation. An indicator window changes from red to green for visual confirmation the base has been installed correctly every time.