About: http://webisa.webdatacommons.org/444221778

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The liner, usually made of EPS (expanded polystyrene) or similar types of materials, absorbs the energy of an impact by crushing.
http://www.w3.org/ns/prov#wasQuotedFrom	smf.org