Extremely specialised greater ranges and winter alpine load carrier at just over 2Kg. However this can be reduced to 1.7Kg by removing frame, hip-belt and lid (the latter converts to a bum-bag for summit attempts). Crampon attachment and axe tubes, ski slots and tool-holsters. Aztec fabric and XPD Harness. Red only. 2.6Kg approx, but can be stripped down to 1.7kg.
Size 2 75 litres
Size 3 80 litres