The Zulu backpack is a standout in terms of technology, featuring the CrossFlo carrying system with perfect ventilation that prevents heat buildup. While other backpacks seem to get heavier as the day goes on, the Zulu 30 remains as airy and light on the way back from the summit as it was in the first few steps. The CrossFlo Dynamic Transfer carrying system creates a space between the wearer's back and the backpack itself, providing unique ventilation for enhanced comfort in any climate and under various conditions. It includes a holder for sunglasses on the shoulder strap. Category: Trekking backpack. Equipment attachment options: Compression straps. Backpack weight: 1100 g.