Montane Alpinist -12 Sleeping Bag


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  • Alpinist -12 Sleeping Bag-Shadow
  • Alpinist -12 Sleeping Bag-Shadow

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Montane Alpinist is one of the most technical sleeping bags on the market. Perfect for multi day routes. Temp rating -12' for comfort.     


Designed to meet the exacting standards of an alpine guide, the Alpinist sleeping bag is one of the most technical mountain sleeping bags on the market today. Designed for multi day routes where -12C conditions are expected - either in a tent or if travelling fast and light on a bivouac. Evolving from years of experience creating the most technical MONTANE® clothing, the Alpinist shares the technical features of the Deep Heat sleeping bag in a lighter and faster package. An underside shell fabric of PERTEX® Endurance provides weather resistant protection to the goose down inside whilst a lightweight, windproof and extremely breathable PERTEX® Microlight topside shell ensures weight saving and maximum packability.

Temp Ratings:

Comfort -5c

Comfort limit -12c

Extreme Limit -31c

Filling: 670g of minimum 90/10 goose down at 800+ fill (USA) CERTIFIED NON LIVE PLUCKED & NON FORCE FED DOWN
Goose down fill weight: 670g 
Weight: 1,168.2g 
Weight stuffed: 1,221.2g 
Construction: Trapezoidal boxwall with MONTANE® side baffles
Colour: Dark shadow / Graphite / Light alpine red lining
Zip colour: Alpine red and Shadow

Internal length: 1,940mm




Upper bag features PERTEX®Microlight that is lightweight, windproof, breathable and features a durable water repellency
Underside PERTEX®Endurance Mini Rip-stop outer provides exceptional weather resistance with a high durable water repellency and can shed ice and snow easily. Use of this fabric on the underside and foot box helps protect the down on bivouacs
PEAQ Down liner that is comfortable next to the skin, highly breathable and fast drying
Exceptionally high quality goose down with 800+ fill power

² length YKK VISLON®zip that is angled away from the shoulder to prevent body contact whilst user is sleeping on side and to allow easier access from inside
Fine microfleece facings and roll over Velcro closure flap at top of YKK zip for extra comfort
Two way YKK VISLON®zip for lower access or ventilation whilst zip is drawn up
Sleeping bag zip opens fully at bottom to completely open sleeping bag to aid airing and drying
Locking zip heads to avoid unexpected zip opening
Glow in the dark zip pulls for easier night time location without head torch
Two double 3-D volume baffles behind YKK zip that extend past zip end for draught proofing

Outer and inner anatomically designed shape tapers around lower legs and curves around shoulders to reduce cold spots
Bag has 3-D construction with side walls to allow comfortable sleeping on side
Trapezoidal vertical baffles across chest and around sleeping bag prevent cold spots and down migration to extremities of body
Horizontal baffles around lower legs and feet help hold the down in correct location
Flipper foot box allows for natural foot position whilst lying on back and more room for thick socks, tent slippers or inner boots
Flipper foot box shape begins in lower leg area and tapers from knees to ankles reducing the amount of cold spots

3-D shaped neck baffle features Velcro closure at either end and is ergonomically shaped to encase the whole circumference of the neck
Split drawcord arrangement in baffle enables further adjustment and pulls insulation closer to front or rear of neck
Baffle can be split by Velcro and can fold down whilst in upright sitting position

3-D shaped hood design based on years of MONTANE®clothing construction experience, in particular the award-winning technical mountaineering jacket hood design
Hood shaping to prevent down migration and to limit cold spots
Peak visor on hood for improved weather resistance and prevention of weather entry into bag whilst bivvying. Peak helps stop condensation entering bag from inner tent or on contact with bivvy bag. Also helps shield light whilst sleeping in high Arctic / Antarctic summer conditions
Rear crown elastication reduces volume around hood which increases thermal efficiency, decreasing the need to wear a hat; ideal for use whilst in sitting position. Elastication also helps hood to move with the head whilst sleeping
Split, colour coded face drawcords to control and adjust volume individually around upper and lower face. Drawcords easily accessed from inside the sleeping bag
Soft brushed microfleece inner next to chin and mouth area
Lower face baffle and upper hood baffle arrangement is 3-D construction to ensure down volume around lower face drawcord area can loft easily

Underside of sleeping bag features non-slip silicone MONTANE®roundels to help grip sleeping mat
Foot box hang loops for storage and drying
Internal stretch mesh water bottle pocket on right hand side
Internal pocket on left hand side with concealed YKK zip for storage of MP3, mobile phone, GPS etc.
Includes MONTANE®cotton storage bag and dry bag
Dry bag doubles as a pillow whilst stuffed with clothing and features a non-slip silicone roundel for extra grip. Features a pull handle at base
Dry bag shape differs from traditional tub stuff sacs; constructed with a packable shape and to fit more easily in packs base compartments


PERTEX® Microlight - Rip-stop

•À_53g/m² 100% Polyamide rip-stop weave
Air permeability 1.0cc max (JIS L 1096 / ASTM D737)
Spray rating 80 / 20 (JIS L 1092)
Abrasion resistance 40,000+ at 12.5k PA (BS EN ISO 12947-2)

PERTEX® Endurance Mini Rip-stop

58g/m² 100% Polyamide mini rip-stop weave
Ultra thin moisture vapour permeable membrane
Highly water and wind resistant
Water resistant to a minimum of 1,000mm (JIS L 1092)
Breathable with an MVTR of 7,000g/m²/24hrs (JIS L 1099 A-1)
Spray rating 80 / 20 (JIS L 1092)


37g/m² ultra soft nylon plain weave
Exceptional comfort next to skin
Highly breathable and fast drying


Due to the many different technical components involved, MONTANE® does not recommend that you wash your Alpinist sleeping bag.
MONTANE® recommends a professional cleaning service if in any doubt.

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