The advansafix iii sict is britaxs new seat for growing children from 9 kg up to 36 kg the 5 point harness safely secures small children up to 18 kg in the car seat for larger children who are secured with the cars 3 point seat belt the secure guard provides an additional 4th contact point keeping the lap belt at the correct position the seat also features removable sict for additional side impact protection whats also unique are the multiple recline positions for all ages up to 36 kg