Packing for High Altitude Destinations
Prioritize a strict layering system, UV protection, and hydration gear to handle drastic temperature swings and intense sun exposure. You must pack for both freezing conditions and harsh direct sunlight, even if you are only visiting for a few days.
- Master the three-layer system. Pack a moisture-wicking base layer (merino wool or synthetic, never cotton), a mid-layer for insulation (down jacket or heavy fleece), and a windproof/waterproof outer shell. You will be peeling these on and off every hour as your activity level and the sun's intensity change.
- Gear up for high-intensity sun. UV rays are significantly stronger at high altitudes. Pack polarized sunglasses with a high-wrap frame, a hat with a brim, and SPF 50+ sunscreen. The glare off snow or rock surfaces can cause snow blindness and severe sunburn in under an hour.
- Prioritize hydration systems. Dehydration happens faster in thin, dry mountain air. Pack a 2-liter hydration bladder or at least two 1-liter reusable water bottles. If you are staying above 2,500 meters, include electrolyte tabs to help your body manage fluid balance.
- Protect your extremities. Blood flow to your fingers and toes decreases as you acclimatize. Pack wool-blend socks and a lightweight pair of gloves that can fit under your mittens. Even if it is 15°C (60°F) in the sun, it will drop to near-freezing the moment the sun dips below the peaks.
- Should I bring an oxygen tank?
- No. Unless you have a specific medical condition pre-cleared by your doctor, you should not bring personal oxygen. If you require medical oxygen to function, you are not acclimatized and should descend immediately.
- Why is cotton a bad idea?
- Cotton 'kills' in the mountains. It absorbs moisture, loses all insulating properties when wet, and takes hours to dry. You will get cold, stay cold, and increase your risk of altitude sickness-related exhaustion.