Assertion: sandbag | /r/MadeOf | other material
Facets:
Source sentences:
text: Whether made of burlap, acrylic, polypropylene or some other material, most sandbags are very good at repelling water.
text: A sandbag (floodbag) is a sack made of hessian/burlap, polypropylene or other materials that is filled with sand or soil and used for such purposes as flood control, military fortification, shielding glass windows in war zones and ballast.