ClickTight Installation System is the safest and simplest technology on the market. Open the front of the car seat, feed the seatbelt through the indicated path and click the seat shut. That’s all you need to do for rock- solid installation. Anti-Rebound Bar minimizes forces associated with crashes by stabilizing the car seat when installed rear-facing. 2 layers of side impact protection, formed by a deep foam-lined shell and quick-adjust head protection, absorb energy and shield your child from the most dangerous type of collision.