What role does the Pertex Shield used on the sleeping bag's outer shell play when tent condensation occurs?
When pitching a tent outdoors in cold weather, condensation forming water droplets on the inner walls can easily wet a sleeping bag. The description states that a condensation-resistant fabric is used, so shoppers may wonder how it actually protects the sleeping bag.
It blocks water droplets and cold air seeping in from the outside while expelling moisture generated inside to the outside, keeping the inside of the sleeping bag comfortable[1][2].
The 3Layer (3-layer) mentioned in the Pertex Shield description refers to a three-layer structure where the outer fabric and lining are bonded together with a functional membrane in the center. FEATHERDOWN's ALPINE SHIELD sleeping bag adopts condensation-resistant PERTEX SHIELD fabric and Polish goose[3]. This fabric has a structure that combines breathability with water repellency to bounce off water droplets and water resistance to withstand water pressure[4].
Functional waterproof and breathable fabrics have the property of repelling external moisture while letting water vapor generated inside pass through to the outside. The fabric of this sleeping bag likewise blocks external moisture and air from entering the sleeping bag, and pushes out and expels moisture generated inside while sleeping[5]. This means that even if condensation droplets formed on tent walls touch the outer surface, it reduces the risk of the goose down filling getting wet and losing its insulating ability, allowing you to stay comfortable.
Specific water resistance and water repellency figures that the Pertex Shield fabric withstands have not yet been confirmed in official materials.
Product measurements
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ALPINE SHIELD(POLISH 1300g)
Other stated figures
| Part | Value |
|---|---|
| 총길이 ◦ | 215cm |
| 가슴 ◦ | 80cm |
For rows marked with ◦, flat measurement or circumference could not be confirmed in official sources, so hmmm determined them using figures from the same item.