About: http://webisa.webdatacommons.org/9195337

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	In a sleeping bag or other tube you are zipped into, differential matters because as you push on the sides with elbows, knees, feet or whatever, the inside liner gets tight but the outside shell is larger so down can still loft .
http://www.w3.org/ns/prov#wasQuotedFrom	hammockforums.net