Assertion: backpack's model | /r/CapableOf | add extra pockets
Facets:
Source sentences:
text: This may be combined with webbing or cordage straps, while more sophisticated models add extra pockets, waist straps, chest straps, padded shoulder straps, padded backs, and sometimes reflective materials for added safety at night.
text: More complicated models add extra pockets, straps, and padding.