Dictionary.com
Thesaurus.com

bedroll vs. sleeping bag

bedroll
[bed-rohl] / ˈbɛdˌroʊl /

noun

  1. bedding that rolls up for portability and is used especially for sleeping out-of-doors.

sleeping bag

noun

sleeping bags plural

  1. a warmly lined or padded body-length bag, usually waterproof and with a closure, in which one or two persons can sleep, especially outdoors, as when camping.