These two young people make some astonishing hiking equipment, including fully functioning packs (http://www.zpacks.com/backpacks/blast.shtml) from 255 grams (Della & I both walked across Tasmania carrying one of these), This 2 person ‘tent’ (http://www.zpacks.com/shelter/hexamid_plus.shtml) from 133 grams, this double groundsheet/poncho combo (http://www.zpacks.com/accessories/groundsheet_poncho.shtml) from 173 grams, a sub zero sleeping bag (http://www.zpacks.com/quilts/sleepingbag.shtml) from 376 grams and a breathable raincoat (http://www.zpacks.com/accessories/wpb_jacket.shtml) from 127 grams. Astonishing that they can get pack 255 + tent 133 + raincoat 173 + sleeping bag 376 to under one kilogram (937 grams)! For most hikers EACH of these items would weigh over one kilo! Joe’s latest ‘dry back’ pack (http://www.zpacks.com/backpacks/arc_blast.shtml) @ 440 grams is definitely on my wish list. Also GREAT people to deal with.