Bring earplugs (it can be noisy sleeping amongst all the other trekkers) and a down sleeping bag and jacket as temperatures plummet once the sun sets.

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The Big Agnes Horsethief is a mummy-shaped down sleeping bag with three major features: no down under sleeper, a sleeve on the bottom to hold a ground pad, and a built-in stow sack to create a pillow by inserting clothing.

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There are hooks on one wall to hang a sleeping bag and a spot on the opposite wall for a fold-down table and foot restraints so astronauts can use a laptop computer.

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