Montane Deep Heat Sleeping Bag

Extreme conditions mountaineering technical sleeping bag
1735g Weight (approx)
  • $600.00


The Deep Heat is a specialist sleeping bag designed for some of the harshest mountain environments in the world, from the European Alps in winter to the greater ranges. Highly tailored with an engineered form and foot box, it guarantees comfortable sleeping, even in the most extreme conditions. The upper bag design has evolved from technical MONTANE® clothing garments - the hood has a secure fit, moves with the head whilst sleeping and offers 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.

  • Summer Alpinist temperature rating
  • 90/10 goose down at 800+ fill
  • Weather resistant outer
  • Clothing style mountain hood system
  • Boxwall baffle construction
  • Unique engineered foot box
  • Glow in the dark zip pulls
  • Draught proof YKK VISLON zip
  • Non-slip silicone grips
  • Internal pockets for storage
  • Specially designed dry bag


  • 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 lining that is comfortable next to the skin, highly breathable and fast drying
  • 1,000g of 90/10 high quality goose down at 800+ fill power, certified non live plucked and non force fed
  • 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


  • 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


  • 3/4 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 hook and loop closure flap at top of YKK zip for extra comfort
  • Two way YKK VISLON® zip enables lower access or ventilation whilst zip is drawn up and also allows sleeping bag to be opened out to aid airing and drying
  • Glow in the dark zip pulls for easier night time location without ­head torch
  • Two down filled baffles behind YKK zip that extend past zip end for draught proofing


  • 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 hook and loop 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 hook and loop 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
  • PEAQ Down lining
  • 1,000g of 90/10 high quality goose down at 800+ fill power



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