Clothing System

Core Principles

• Dry at night. Warm while moving. Block wind always.
• Wet hiking clothes are acceptable.
• Wet + cold + static is dangerous.
• Sleep layers are sacred and never hiked in.
• Calories are heat.

Layer Definitions

Base Hiking Layer

• Kuhl Engineered Hoody (long-sleeve sun hoodie) - 7.0 oz

Primary role: Primary hiking shirt for all conditions
Secondary: Sun protection, base layer under Alpha Freak in cold

Purpose: Moisture wicking, sun protection, base warmth layer

Base Layer (Next-to-Skin)

• Smartwool Merino 250 Sleep Top - 8.5 oz
• Smartwool Merino 250 Sleep Pants - 8.7 oz

Primary role: Sleep + camp only
Secondary: Rare, brief emergency daytime use only

Rule: Never hike in sleep layers. They stay dry.

Active Mid Layer

• Top: Rab Alpha Freak - Polartec Alpha Direct (12.7 oz)
• Bottom: Rab Talus Tights (6.6 oz)

Purpose: Warmth while moving, breathable insulation, primary hiking warmth layer in cold conditions

Shell Layer

• Outdoor Research Rain Jacket - 12.9 oz
• Rab Proflex Rain Pants - 11.6 oz

Purpose: Wind and precipitation protection. Critical on ridges and during stops.

Insulation Layer (Static Only)

• Mountain Hardwear Down Puffy - 8.5 oz

Purpose: Camp warmth. Emergency heat retention. Not used while hiking except in emergencies.

Additional Clothing Items

Warm Season Shirt:

• Kuhl Engineered Polo (short-sleeve) - 6.0 oz (carried for temps 60°F+)

Socks:

• Smartwool Hiking Socks (worn) - 3.7 oz per pair
• Sleep Socks - 3.7 oz
• Sealskinz Waterproof Socks (1 pair backup) - 4.4 oz

Base Layer:

• Smartwool Merino 150 Boxer Brief - 3.8 oz

Head/Hands/Feet:

• Buff - 2.3 oz
• Rab Vapor-Rise Gloves - 3.1 oz
• Outdoor Research Revel Shell Mitts (winter only, drop at Hot Springs/Damascus) - 3.7 oz
• Altra Trail Gaiters - 1.3 oz
• Faith Moves Mountains Cap - 2.0 oz

Layering by Temperature

Core Layering Principles (Non-Negotiable)

1. Start hiking slightly cold
2. Prevent sweat at all costs
3. Adjust early, not late
4. Base bottoms are for sleep and camp (used while hiking only in extreme cold, briefly)
5. Head and neck insulation is critical
6. Cold is acceptable — heat loss is not
7. If wet + cold = slow down or stop early

Temperature-Based Layering Guide

Conditions	Layers
60°F+, Moving/Dry	Kuhl Polo (short-sleeve) or sun hoodie, Rab Talus Tights or tights + rain pants if windy
45-60°F, Moving/Dry	Kuhl sun hoodie, Rab Talus Tights or tights + rain pants if windy
35-45°F, Moving/Dry	Kuhl sun hoodie + Rab Alpha Freak, Rab Talus Tights + Rab rain pants, Buff optional
25-35°F, Moving/Dry	Kuhl sun hoodie + Rab Alpha Freak, Rab Talus Tights + Rab rain pants, Buff, OR rain jacket for wind only
20-30°F, Moving/Snow/Wind	Kuhl sun hoodie + Rab Alpha Freak + OR rain jacket, Rab Talus Tights + Rab rain pants, Buff, Rab gloves
Camp/Static (Any Temp)	Mountain Hardwear puffy ON immediately, OR rain jacket over puffy if windy, never rely on Alpha Freak for static warmth
Sleep (Every Night)	Smartwool 250 sleep top and sleep pants, sleep socks, puffy inside quilt if temps drop

Rain Pants Decision Rule

For a February or March southern start, rain pants stay in the system until the rain system has been proven in comparable cold rain and wind. Do not make the keep/drop call from weight alone. Weigh the current forecast, wind, personal cold tolerance, how fast you chill when wet, whether the dry sleep layer is protected, and what the next safe town or bailout looks like. If the answer is uncertain, keep them until a shakedown or first section proves they are unnecessary.

72-Hour Cold/Wet Survival Protocol

Morning

• Eat something
• Pack sleep clothes first (dry bag)
• Accept wet hiking clothes
• Start slightly cool

Moving in Rain/Sleet/Snow

• Rab Alpha Freak + OR rain jacket
• Rab rain pants
• Vent early to avoid sweat buildup
• Eat every 60-90 minutes

Never hike in the Mountain Hardwear down puffy.

End-of-Day (Non-Negotiable)

• Strip wet clothes immediately
• Put on dry Smartwool 250 sleep top and sleep pants
• Mountain Hardwear puffy on immediately
• Eat calories
• Get into quilt early

If Forced to Stop (Injury/Delay)

• Mountain Hardwear puffy on
• OR rain jacket on
• Buff + Rab gloves on
• Get off the ground
• Preserve heat first

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