Specs + Sizing
FeaturesSize Medium Jacket Weight: 9oz / 255g
Designed for high aerobic activity in cold temperatures
Stretch fabric panel with stretch insulation provides maximum freedom of movement
Lightweight trim fit for layering.
Anorak style with deep center front zipper for easy on and off and less weight and bulk of a full zipper
Features YKK Vislon zippers with textured zipper pullers for ease of use with gloves
Stealth, no-draft thumb holes make layering easy and eliminate the gap between sleeve and glove
Snug elastic bound cuffs for excellent mobility and warmth
Adjustable drawcord hem seals out wind
Chest pocket doubles as a stuff sack
Construction + MaterialsPrimaLoft® Gold Active insulation
Ultralight random rip-stop nylon shell is wind and water resistant with high tear strength and abrasion resistance
Lightweight nylon stretch side and back panels
Lightweight breathable lining
Here’s what other people think.
What’s in a Name?
Gem Lake sits directly north of Big Agnes mountain in the Zirkel Wilderness area. Accessed by the Slavonia trailhead, the lake was so named for its unusually clear and "jewel-like water". A short hike to the lake off the Main Fork Trail proves to be a worthwhile adventure for a backpacking skinny dip.