We have decided that a rucksacks weight must lie in its contents and not in the sack itself. AirTech 22 is just 350 grams in Nylon Rip Stop in the Grivel exclusive yellow/black. All frills removed to reduce weight and bulk. The rucksack can be folded away into its hood’s pocket and only reappears when it’s needed. Complete with a back pocket for the foam pad and an ice axe attachment. This new standard will be appreciated where the air is thin and every gram weighs like a kilo.