Quick Answer
Ice climbers utilize vapor barrier clothing to prevent moisture from entering the clothing and causing hypothermia. This is achieved through a waterproof and windproof outer layer, a vapor-permeable membrane, and a breathable inner layer. By doing so, they maintain a dry microclimate next to their skin.
Understanding Vapor Barrier Clothing
Vapor barrier clothing consists of a waterproof and windproof outer layer, a vapor-permeable membrane, and a breathable inner layer. The outer layer prevents water from penetrating, while the vapor-permeable membrane allows moisture vapor to escape. This prevents the buildup of condensation and the resulting chill. Examples of vapor-permeable membranes include Gore-Tex and eVent.
Choosing the Right Clothing
When selecting vapor barrier clothing for ice climbing, consider the activity level, wind speed, and temperature. For high-intensity activities, choose clothing with a higher breathability rating, such as 20,000-30,000 g/m2/24hr. This ensures that moisture vapor can escape efficiently. For example, the Arc’teryx Beta AR Jacket has a breathability rating of 20,000 g/m2/24hr. Additionally, consider the layering system, which typically consists of a base layer, mid-layer, and outer layer. This allows for optimal temperature regulation and moisture management.
Techniques for Maximizing Performance
To maximize performance while wearing vapor barrier clothing, ice climbers employ various techniques. One is to wear a base layer that wicks moisture away from the skin, such as a merino wool or synthetic top. Another is to adjust the layering system according to the activity level and temperature. For example, adding or removing the mid-layer can greatly impact body temperature. By understanding the properties of vapor barrier clothing and employing effective techniques, ice climbers can maintain a high level of performance and safety in cold and windy conditions.
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