2010 keystone outback Sydney edition 310bhs has aluminum structure and the arctic barrier insulation package it is in really good shape for the year has lots of new parts this season we used it many times this year it has tons of storage and two 40 gallon grey tanks sleeps 10 both couches make a full size bed great for camping or temporary living only selling because we found another camper we want someone caught the driver’s side rear corner on something before we got it so it does have a rebuilt title but it has been repaired