Pack for your climb with a 0°F-rated sleeping bag, full-length inflatable pad, and water purification. Bring 3 plastic water bottles, sunglasses, toiletries, sunscreen, insect repellent, towel, headlamp, trekking poles, gaiters, and money belt. Include a personal first aid kit and consider optional items like a pillow, rope, umbrella, and watch.
An option here is to purchase a hydration system like a “Camelback”, with water pouch & hose. It can free up your hands. If you do this, you should still bring at least two bottles in your daypack to refill your pouch, and ensure that you’re getting your daily 4-5 litres of liquid. You may need to abandon this system as you approach the summit. The hoses, even when insulated, freeze quickly. One way to minimize this problem is to remove the mouthpiece each time you take a drink, and blow the water back into the reservoir, which will keep the hose free of water. There will be some residual water that freezes near the mouthpiece, which will require that you bite the hose to break up the ice to free the flow of water.
Note: In freezing conditions, your water bottles will freeze on the top first. If you store your water bottles upside down (making sure that it’s closed tightly), you’ll be able to drink your water even with the freezing process underway. It’s better yet to use warm or hot water in your water bottles (and/or camelback) before your treks in freezing weather. You are much more likely to drink warm water than freezing-cold water.
Your first-aid kit should include the following:
Medicines in your first aid kit should be discussed with your physician, and should include addressing the following:
* Prescription medicines
NOTE: (Though this might seem obvious.) When on the mountain, you will have no access to electricity.