Expedition-grade outerwear — Bozeman, MT, since 2014
Tested at −40°.
Built for wherever you're going.
Every Summitline shell spends 40 hours in our cold chamber before it ships. Seam-taped, storm-flapped, and worn by three guides on the West Rib before we sell it to you.
Rated range
The Cairn Shell Parka
Insulated to hold core comfort from −20°F to 15°F, and survivable well past that. Ripstop face fabric rated to 20,000mm hydrostatic head — that's a standing column of water two stories tall before it gives.
- Fill
- 650-fill goose down, 280g
- Shell
- 40D ripstop, DWR-treated
- Weight
- 1.4kg / 3.1lb, size M
- Field-tested
- Denali West Rib, Feb 2025
−20° to 15°F
Field log 04
Denali, West Rib.
19,400ft, dawn start.
Wind chill at the ridge hit −35°F before the sun cleared Foraker. Three of our guides summited in prototype shells that are now the Cairn. Elevation gain: 3,050m from base camp. Days on route: 14.
See what they wore- 20,310ftDenali summit
- −35°Fridge wind chill
- 14days on route
Gear that doesn't quit
Built for the approach, not the parking lot.
-
Waterproof to 20K mm
Cairn Shell Parka
The flagship. Storm hood, pit zips, 6 pockets built for gloved hands.
$420 -
Waterproof to 12K mm
Talus Softshell
Stretch-woven for the scramble sections. Rated to 10°F.
$260 -
Waterproof to 20K mm
Basecamp Bibs
Full-length side zips, reinforced knees and seat.
$310 -
Wind-resistant
Ridge Glove Liner System
Two-layer liner plus shell mitt. −20°F rated together.
$65 -
Abrasion-resistant
Couloir Pack 42L
Ice-axe loops, roll-top lid, one buckle to close.
$195 -
Wind-resistant
Contour Beanie
Merino-lined, covers the ears past the ridgeline.
$38
From the field notebook
Feb 14, 2025 — 17,200ft camp, Denali
Wind held at 40mph through the night. Tent stakes buried a meter deep in the plateau. The Cairn's storm hood cinched down to a 4-inch eye slot and stayed put through two gusts that flattened a neighboring camp.
Nov 3, 2024 — Cold chamber, Bozeman shop
Held a size-M Cairn at −40°F for six hours with an internal thermocouple. Core reading never dropped below 91°F. That's the number we build every batch to match.
Aug 22, 2024 — Talus prototype, Bugaboos
Softshell shed a surprise afternoon squall on the Kain Route without soaking through. Stretch panels held up through 200m of chimney climbing without a single seam complaint.