Montane Deep Heat -20 Sleeping Bag


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  • Deep Heat Sleeping Bag - Further Faster
  • Deep Heat Sleeping Bag - Further Faster

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Montane Deep Heat Sleeping Bag -20' A specialist Alpine sleeping bag for high and cold extremes.



The Deep Heat is a specialist sleeping bag and almost certainly a leader in its class. It is a piece of sleeping equipment designed for some of the harshest mountain environments in the world, from the New Zealand Alps in winter to the greater ranges in Asia. Highly tailored with an engineered, ergonomic form and foot box, it guarantees the user to sleep in absolute comfort, even in the most extreme conditions. The upper part of the bag is a design evolution taken from the most technical of MONTANE® clothing garments, allowing the hood to securely fit and move with the head whilst sleeping and offering sheltered protection whilst sitting upright either in a tent or on a bivouac. An outer shell of PERTEX® Endurance provides an elevated level of weather resistance. Trapezoidal baffle construction reduces cold spots and a well-considered down layout maximises heat retention even whilst sleeping on the side.

Goose down fill weight: 885g / 31.2oz
Weight: 1,464g / 51.6oz
Weight stuffed: 1,524.2g / 53.8oz


Activities: Polar Exploration / Mountaineering / Basecamp

Temp Ratings:

Comfort -12c

Comfort Limit -20c

Extreme Limit -42c

Internal length: 1,940mm / 76.3in

Trapezoidal boxwall with MONTANE® side baffles

Black / Dark alpine red lining
Zip colour:
Dark alpine red and Black:

Fabric denier: 30D x 30D Rip-stop
Lining: PEAQ Down
Zip: ² length YKK VISLON®
Filling: 885g / 31.2oz of minimum 90/10 goose down at 800+ fill (USA) CERTIFIED NON LIVE PLUCKED & NON FORCE FED DOWN


PERTEX®Endurance Mini Rip-stop outer provides exceptional weather resistance with a high durable water repellency and can shed ice and snow easily
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 allows 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
Glow in the dark zip pulls for easier night time location without ²head 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 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 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 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 or bivvy bag
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 pack base compartments


    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)

    PEAQ Down

    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 Deep Heat sleeping bag.
    MONTANE® recommends a professional cleaning service if in any doubt.

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