Belgian Army Berghaus Cyclops II Vulcan RucksackIf you're after a big, robust pack for long treks, this is the one. A classic for those in the know, these Berghaus Cyclops II's come from the Belgian Army. On the odd pack, the cheeky Belgians have added their own straps here and there evident by the jigsaw camo. These packs come in different sizes, reflecting the height back length of the wearer. Currently we have: Size 2: 38 43 cm back length 160 173cm (5'3" 5'8") Height Size 3: 43 48 cm back