How do I properly secure my child in the SnugRide 35 Lite LX?

Place your child in the restraint with harness straps around them, insert both buckle tongues into the harness buckle on the crotch strap until you hear a click, 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. Verify the harness is snug by checking that you cannot pinch the strap and it lies in a relatively straight line without sagging.