How much warmer should my sleeping system be rated?

Add 10-15 degrees F to your normal sleeping bag rating. A bag rated to 20°F for sea level should be rated to 5-10°F for high altitude. Thin air provides less insulation.

Do I really need three pairs of gloves?

Yes. Liner gloves for dexterity, insulated gloves for warmth, and waterproof shells for wet conditions. Your hands are most vulnerable to frostbite and you'll use different combinations constantly.

Should I pack cotton clothing for camp comfort?

No. Cotton kills at altitude. Even in camp, temperatures drop fast and cotton takes forever to dry in thin air. Stick to synthetic or wool fabrics exclusively.

How many extra layers do I actually need?

Pack one complete backup outfit plus 2-3 extra base layers. Weather can trap you for days and wet clothing in mountains is dangerous. Better to carry extra weight than freeze.

How to Pack Clothing for High-Altitude Destinations

Pack in layers focusing on moisture-wicking base layers, insulating mid-layers, and windproof outer shells. Bring sun protection gear and pack 30% more clothing than you think you need since mountain weather changes fast and laundry options are limited.

Start with moisture-wicking base layers. Pack 3-4 merino wool or synthetic base layer tops and bottoms. Avoid cotton completely - it kills in mountains when wet. Merino wool works best because it doesn't smell after multiple wears.
Add insulating mid-layers. Bring 2 fleece jackets or wool sweaters in different weights - one light for hiking, one heavy for camp. Down jackets work great but pack a synthetic backup since down loses insulation when wet.
Pack windproof and waterproof outer layers. Include a hardshell jacket and pants rated for mountain conditions. Look for full side zips on pants for easy on-off over boots. Your rain gear doubles as wind protection.
Prioritize sun protection clothing. Pack long-sleeve UV-rated shirts, a wide-brimmed hat, and quality sunglasses. UV exposure increases 10-15% per 1000 feet of elevation. Glacier glasses are essential above 10,000 feet.
Include altitude-specific accessories. Pack liner gloves, warm gloves, and waterproof gloves - three pairs total. Bring a warm beanie that covers your ears and a sun hat. Include gaiters to keep snow out of boots.
Plan for 30% extra clothing. Mountain weather changes in minutes. Pack extra socks, underwear, and one complete backup outfit. Laundry facilities are rare and drying takes forever in thin air.

How much warmer should my sleeping system be rated?: Add 10-15 degrees F to your normal sleeping bag rating. A bag rated to 20°F for sea level should be rated to 5-10°F for high altitude. Thin air provides less insulation.
Do I really need three pairs of gloves?: Yes. Liner gloves for dexterity, insulated gloves for warmth, and waterproof shells for wet conditions. Your hands are most vulnerable to frostbite and you'll use different combinations constantly.
Should I pack cotton clothing for camp comfort?: No. Cotton kills at altitude. Even in camp, temperatures drop fast and cotton takes forever to dry in thin air. Stick to synthetic or wool fabrics exclusively.
How many extra layers do I actually need?: Pack one complete backup outfit plus 2-3 extra base layers. Weather can trap you for days and wet clothing in mountains is dangerous. Better to carry extra weight than freeze.