Water-resistant, breathable WINDSTOPPER® fabrics by GORE‑TEX LABSs is filled with high-quality 800 fill power down to provide exceptional warmth in an ultralight, highly-packable form. Upper gaiter prevents snow from entering, making the booties ideal for overnight camps in the snow.

Specs

Material: WINDSTOPPER® fabrics by GORE‑TEX LABS
30-denier Ballistic® nylon ripstop
Lining: CLIMAPLUS® Mesh (polyester)
Bottom: DURAGRIP
800 Fill Power EX Down
Weight: 235 g
Color: YELLOW (YL)
Size: S, M, L
WINDSTOPPER® fabrics by GORE‑TEX LABS delivers excellent water protection and breathability
High-quality 800 Fill Power EX down delivers excellent warmth
Brushed lining increases warmth and keeps foot in place
One-hand fit adjuster allows quick and easy adjustment around the ankles
Gaiters extend up to calves to prevent snow from entering
Soles feature DURAGRIP to ensure grip and durability
Stuff sack included
Size:
S: 22 - 24 cm, M: 24 - 26 cm, L: 26 - 28 cm
Compressed size: Ø13 x 20 cm

About the material: EX Down

World class, high quality down
Montbell's premium down comes from water fowl that live in regions with seasonal temperature extremes. The down balls from birds in such regions are characteristically much larger.
Large down balls hold more warm air, which translates to needing less down to provide exceptional warmth retention.

Lightweight yet warm
When compared by weight to lower quality down, an equal amount of premium down is loftier and has better warmth retaining properties.

Laundry symbols

Activity>Camping>Sandals / Camp Shoes

Activity>Mountaineering (Alpine Conditions)>Footwear

Clothing>Insulated Jackets & Pants>Foot Warmer

Clothing>Socks>Camp Shoes / Foot Warmer