A wall of seam-taped WINDSTOPPER® distilled to its lightest form, the Mountain Vest stands in defiance against backbreaking gravity and torrid gales. In your pack, it’s a ghost. But once deployed, it comes to life, delivering immediate wind protection and warmth to your core.
Understanding Kelvin Insulation | SITKA Gear
Big Game
When it comes to insulation, we’ve designed varying configurations to accommodate niche weather conditions and activity levels for big game hunting.

Features & Benefits

Fully Windproof 2-Way Stretch Nylon
A fully taped WINDSTOPPER® membrane and a light nylon shell prevents convective heat loss.
Zippered Hand Pockets
The zippered pockets keep small essentials safe and accessible.
Durable Water Repellent Finish
The DWR finish resists light precipitation and prevents the face fabric from wetting out.
Material
Shell // High Gauge Nylon
Backer // Soft Knit Polyester
Product Care
Routine Care and maintenance ensures the optimum performance of your SITKA Gear/ GORE® WINDSTOPPER®
Be sure to follow the manufacturer’s care instructions –typically found on the inside tag.
- Use a front load washing machine and a scent-free, gentle detergent
- Use warm water on permanent press or gentle cycle and rinse twice to ensure all cleaner has been removed.
- Do Not Bleach + Do Not Dry Clean + Do Not Iron
- Visit Care Guide to better understand DWR and how to revitalize it.































Product Technology
WINDSTOPPER
WINDSTOPPER® products shelter hunters from the adverse effects of bone-chilling winds. The WINDSTOPPER™ membrane works with our base layers to prevent overheating and perspiration build-up by allowing moisture vapor to easily escape.