Big Agnes - Steamboat Springs, CO
Sleeping Bags / Traditional Mummy
DownTek™ Water Repellent Down

McAlpin SL 5

McAlpin SL 5 5°

$359.95 - $379.95

700 DownTek™ Zero
Men’s Traditional Mummy bags are built for performance. In our first diversion from the Big Agnes System since we started 12 years ago, we are proud to introduce the most technical old-school sleeping bags ever! These bags are insulated with DownTek™ water repellent down and constructed with Insotect Flow™ patented technology. Their mummy shape and lightweight materials will get you wherever you want to go, fast and dry.
  • We are proud to introduce a Traditional Mummy down sleeping bag line featuring DownTek™ water repellent down. DownTek™ transforms down into a water repellent, anti-microbial and anti-bacterial insulation material. Even in the wettest of conditions, DownTek™ repels water while maintaining loft, insulation value, and breathability.

  • Traditional mummy shaped bags without the pad sleeve
  • 70"/178cm YKK #8 zipper
  • Interior fabric loops for sleeping bag liners
  • Mate together left and right zip bags
  • Mesh storage sack & nylon stuff sack
  • No-draft collar seals around neck to keep cold air from sneaking in
  • No-draft zipper tube insulates along the length of the zipper
  • Flow™ Construction: Insotect Flow™ is a flow-optimized insulation system that delivers uniform heat distribution and natural body contouring through its revolutionary baffle design. Flow Construction eliminates lateral and vertical down shifting by using vertical chambers with Flow Gates to regulate fill positioning and density. Strategically placed Flow Gates minimize vertical down shifting while vertical chambers minimize lateral shifting. With continuous vertical Flow chambers in place of traditional side seams, Flow bags eliminate potential cold spots which can occur with side seams. Vertical baffles now flow with your body for more rapid and uniform body heat distribution.
  • LEFT OR RIGHT ZIPPER? When you are in the bag, on your back, the right zip will be on your right side, left zip on your left side
  regular/up to 6' long/up to 6'6"
Pad Size any any
Color blue/gray blue/gray
Fill Type 700 DownTek™ Zero 700 DownTek™ Zero
Fill Weight 28oz 30.5oz
Bag Weight 2lb 15oz 3lb 2oz
Shoulder Girth 60" 62"
Hip Girth 54" 56"
Foot Girth 36" 38"
Stuff Sack Size L-9"x20" L-9"x20"
Bag Size
9"x9.5" 9"x10"

In North Routt County there is a cluster of mountains with low-angle tree skiing and deep snow. Accessible by skin track or snowmobile, (if you know a guy, and bring some beer) these mellow lines offer lap after lap of fresh pow, big views of the Zirkels, and no lift lines. McAlpin sits right in the middle of this backcountry skier’s paradise.

DownTek water repellent down insulation

Sarah expands upon the technical features of a new water repellent down insulation called DownTek

McAlpin SL 5°F Traditional Mummy Sleeping Bag

Drew touches on the features of the McAlpine SL 5°F traditional mummy sleeping bag, featuring DownTek water repellent down.

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