When you are climbing Mount Kilimanjaro, you should have one waterproof duffel bag to pack all your gear (this is not including your day pack). Since mountaineering generally requires many different types of clothes and equipment, you probably will have too much gear, clothes, food and extra things to bring. It always happens.
How do you solve this?
The trick to packing tons of mountaineering gear into a very small place is compression sacks. Compression sacks are a space saving crutch – and great way to utilize space while bringing all the important gear. Seperate from my boots and my coat, all of my clothes for seven days on the mountain is packed into this one bag.

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Climb Kilimanjaro for The Children's Society
Mt. Kilimanjaro Forum Thread for the week of October 16, 2006
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