The Lucas bag looks very similar- but its weight is 3 lbs-- how do you think it may compare? My old Lucas duffels have lasted decades.
http://www.ebags.com/lucas/lucas_21_...modelid=146547
Lucas 21" Exp Soft Carry On conveniently stores all your personal items
Size: 21" x 14" x 9"
Weight: 3 lbs
Material: 420 Nylon
Warranty: 5 Years
Linear inches: 44"