Britax safe-n-sound BS0072E-i20133 Instructions For Installation & Use page 48

H. Adjust the top tether strap by pulling adjustment
strap to remove slack as shown.
Ensure the strap is not so tight as to lift the seat
or deform the headrest. Only remove the slack.
I. Always roll up excess strap and place in the
pocket provided attached to the cover.
48
Instructions for Installation & Use
Pull Adjustment Strap to remove slack
Roll up excess
strap and store
in the pocket
attached to the
cover.