Designed with advanced technology to keep children protected and in a five-point harness for as long as possible, the FRONTIER 85 SICT Combination Harness-2-Booster Seat helps safely graduate children who are at least two years old and weigh at least 25 pounds from their convertible car seats. By removing the harness, the FRONTIER 85 SICT is easily converted to a booster seat for older children who are at least 4 years old and 40 pounds.The FRONTIER 85 SICT has all the safety, comfort, and ease-of-use features that the FRONTIER 85 has to offer. In addition, this seat is equipped with Side Impact Cushion Technology (SICT) for advanced side impact protection, and an Easy-Remove Cover that can be removed for cleaning without disassembling the harness or uninstalling the seat from your vehicle.