Britax Marathon Convertable Carsear in Onyx. Great condition, comes with the infant seat insert and the rebound bar. 2 years left on this great carseat! Convertable car seat: rear facing 5-40 lbs, forward facing 22-65 lbs. - Safecell complete side impact protection surrounds your child in a deep protective shell - Quick-adjust, 10-position harness and 2 position buckle allows you to easily move the harness upward and buckle outward for a comfortable, secure fit as your child grows. Manufacture date: November 2, 2016 Expiry date: November 2, 2022 Manufacturer has confirmed seat meets safety regulations.