About: http://webisa.webdatacommons.org/60751405

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	I presume it is a frame made of delrin or other synthetic material which provides the structural strength whilst the polyurethane is used to provide only the shape and contouring.
http://www.w3.org/ns/prov#wasQuotedFrom	thefiringline.com