weight:20.2/20.3/21 oz
volume: 37L; 43L (internal capacity)
sizes: 17”; 19”; 19" w/ long straps
sizing: roughly, 17" = small/medium, 19" = medium/large, 19" w/ long straps = extra large. long straps are ~2" longer above the strap pockets to fit taller/bigger hikers more comfort
