Thanks ! In my research , i found three different models from around 2001 ...the largest was black trim/buckles , the mid sized was blue trim/buckles , and the small one was yellow trim/buckles. They also called them by their different capacities , ie : vapor (later cloud) 4000 , 4500 and 5000-6000. The pack i have has WHITE buckles and YELLOW trim . Very confusing ! Kelty said mine was the large model even though it has the odd color scheme.