Microfiber-10°F / -23°CSemi-rectangular

Bristlecone MF

Semi Rec (w/ full collar)

Weight, 6′0″
3 lb 15 oz1785 g
Insulation
850+goose down
Shell
20D MicrofiberMicrofiber
Length
Zipper

$1,200

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Not sure about length or fit? Try our sleeping bag selection guide.

Bristlecone MF – Expedition Sleeping Bag for Extreme Cold

The Bristlecone MF is an expedition sleeping bag for extreme cold, designed for deep-winter comfort in the harshest environments. This bag is built for Arctic expeditions, high-altitude base camps, and late-season hunts where staying warm is mission-critical.

Its wide, semi-rectangular shape provides extra space to layer up, shift positions, or simply stretch out. You won’t sacrifice insulation for comfort. With 850+ fill power goose down and massive loft, the Bristlecone offers serious heat retention in sub-zero conditions.

The MicroLite XP™ shell resists water and wind while remaining breathable. It sheds frost and spindrift while protecting the insulation inside. A full down-filled collar and insulated draft tube seal in warmth and block out the cold.

This bag thrives in bitter cold. Whether you’re camped in a snow cave or on a wind-swept ridgeline, the Bristlecone MF offers trusted warmth and durability. Its roomy cut makes it perfect for long base camp stays or anytime you want to sleep in full layers.

At 4 lb 3 oz, it’s surprisingly light for a bag with this much insulation and space. It packs efficiently for its size, making it ideal for cold, gear-heavy expeditions.

Handmade in the USA, the Bristlecone MF combines expedition-ready performance with unmatched sleeping comfort. When the temperature drops and the weather turns unforgiving, this is the bag you’ll want to be in.

Features

  • Filled with 850+ Fill Power ethically-sourced premium goose down
  • Side block baffle construction for better control of insulation in colder weather
  • Full-length #5 YKK zipper provides a smooth, easy unzipping experience while saving weight
  • Insulated Draft Tube and Full Collar keep the cold air out and warm air inside to prevent heat loss
  • Durable 20 denier MicroLite XP™ outer shell stays more breathable and water resistant longer than traditional polyesters
  • Dual zipper design allows sleeping bag to open completely for greater temperature regulation
  • Comes with ultralight stuff sack and breathable storage bag
  • 3 lb 15 oz. Total Weight

Specifications

Shape
Semi Rec (w/ full collar)
Temp Rating
-10°F
Fill
850+ Power Goose Down
Color
Forest Green/Black
Country of Origin
USA
Fabric
20D Microfiber
Loft
8.5" in
LengthInside Girthshoulder / hip / footFill WeightTotal WeightStuff Size
6'0"69"/61"/48"42 oz3 lb 15 oz10"x20" XL
6'6"69"/61"/48"45 oz4 lb 3 oz10"x20" XL

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