Mercedes-Benz 2005 E 320 Operator's Manual page 258

Controls in detail
Loading
Connect snap hook 1 of front strap to
eye 2 located on center tunnel in
front of rear seat bench.
256
Unloading and folding
Loosen strap, open clasp by pressing
tabs together (arrows).
Unload skis.
Close flap in trunk.
Fold and flatten ski sack lengthwise
and place folded ski sack inside recess
of backrest.
Close ski sack compartment cover.