What role does the ventilation zipper mentioned in the hiking hooded jacket description play?
When reading the description of a hiking outerwear piece, you often see notes about a long zipper running from the sleeve down the side of the body. You wonder how this zipper is actually used when climbing a mountain while wearing the garment.
It serves as a ventilation opening that quickly expels sweat and heat generated in the upper body to the outside, helping regulate body temperature during a hike without taking off the outerwear.
Ventilation refers to venting that allows air to circulate, discharging accumulated moisture and heat from the inside out.
It opens up a pathway for the breeze. The hiking hooded jacket from Hegiorsak is designed with a long zipper running from the inner sleeve to the side chest seam to quickly release sweat and heat from the upper body to the outside[1].
Body temperature can be managed simply by opening and closing the zipper. Without the hassle of putting down a backpack and taking off your outerwear, you can wear it by zipping it down on uphill sections where heat builds up to let cool air in, and zipping it back up to retain warmth when the wind turns cold along the ridge.

It has not yet been confirmed whether a mesh fabric is lined inside the gap that opens when the zipper is undone.
Product measurements
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등산 후드자켓 _ 오렌지(OR),라이트카키(LK),차콜그레이(CG)
Measurements
| Part | Value |
|---|---|
| 무게 | 114g |
Other stated figures
| Part | Value |
|---|---|
| 용량 ◦ | 3l |
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.
