What is the proper way to secure my child in the SnugRide SnugLock 35?

Place your child in the restraint with harness straps around them. Insert the two buckle tongues into the harness buckle on the crotch strap until you hear each tongue click into place. Then snap the chest clip pieces together and pull the harness adjustment strap to tighten. Position the chest clip in the middle of the chest at armpit level, away from the neck.