Chrysler Town & Country 2011 Owner's Manual page 155

Pull out the retainer strap from the sewn-in pocket
located on the base of the seat cushion.
Retainer Strap
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 153
Place the strap around the grab handle located on the
B-Pillar. Before securing the strap, adjust the buckle for
proper fit.
B-Pillar Grab Handle
3