Throw the Mountain Hardwear Lightweight Exp. Duffel Bag in with your gear when you head down to Chile this summer and bring back all your llama hats and wood flutes without having to leave some of your gear to make room. This lightweight bag stores within its external end pocket and weighs a mere 15oz so you can easily bring it along on your way down, and then use it as overflow storage on the way back.
I was waiting for this travel duffels for a long time, but I am very satisfied with Mountain Hardwear Lightweight Exp. 30L Duffel Bag - 1830cu in Ice Shadow, Reg!