I've taken all my packs on jaunt hikes,& a few overnighters.I haven't used them with my complete bob contents.I've thought of it many times,I just seem to categorize my stuff,pertaining to weather/terrain,probably in the 25lb range.I use my Mountainsmith Day pack often,& it gets beat up fairly well,probably Nowhere near a true bug-out situ.No competitive stuff,& My present bob weighs close to 45lbs out the door!