Why Does Your Waterproof Jacket Get Wet Inside?
author: Cherry Chen
2024-01-29
Moisture control the breathability of waterproof jackets relies on a process known as 'solid state diffusion,' where water vapor is absorbed through the fabric and subsequently transferred to the other side.
The water vapor always seeks to move to the less humid side of the fabric to maintain an equilibrium.
Under most conditions, this results in the moisture moving from the inside to the outside of the jacket.
However, in very humid conditions, the jacket may feel less breathable.Air Permeability.
Air permeability measures the amount of air that a fabric allows to pass through it.
Air permeability measures the amount of air that a fabric allows to pass through it.
While not all waterproof jackets have an air permeability rating, those that do may have a lower Moisture Vapor Transmission Rate (MVTR) compared to those without the rating.
Nonetheless, this rating does not necessarily indicate inferior breathability, as having some airflow in your jacket can reduce the risk of overheating.
The presence of pockets in your waterproof jacket can influence its breathability, as they add an extra layer of fabric.
The presence of pockets in your waterproof jacket can influence its breathability, as they add an extra layer of fabric.
Some jackets are designed with clever mesh pockets to minimize the amount of fabric and facilitate the release of excess heat and sweat.
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