Basement - Montane Deep Heat Down Jacket

300g of 800+ Fill Power Down / Pertex Quantum Pro Shell / HyperDry Hydrophobic Goose Down
Weighs 784g (Medium size)
Code: AW17102
  • Now £214.99
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The Montane Deep Heat Jacket is the ultimate technical and warm HyperDRY down jacket. Ideal for winter mountaineering. 

Built for high altitude and extreme cold conditions, the Deep Heat Jacket combines high quality water resistant fluorocarbon-free HyperDRY™ 800+ fill power goose down and a unique PERTEX® QUANTUM PRO with DIAMOND FUSE outer shell fabric to create a supremely technical and warm down jacket. Designed for winter mountaineering the Deep Heat Jacket is loaded with features including an adjustable helmet compatible hood, two-way front zipper, three external pockets, two internal mesh drop-in pockets, and its own waterproof dry bag.

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 Click here for more info on Montane, product updates and New Season information.

| Hyperdry Water Resistant Down - Extreme water resistance for extreme situations - throughout all fill powers. Click the Logo to read more..
| Pertex Quantum Fabric - Light enough to enable down to loft better, comfortable enough for next-to-skin. Click Logo to read more...

If warmth is what your looking for in a jacket then you needn't look any further than the Montane Deep Heat Down Jacket. Designed for the harshest of weather at high altitudes and in extreme cold, the Deep Heat Jacket will keep you warm throughout your outdoor activity with 800+ fill power goose down and a unique Pertex Quantum Pro with Diamond Fuse outer shell fabric.

It's warmer than the Montane North Star Lite Jacket with 300g of fill down instead of 210g but it is much heaver in comparison. All Montane down products now utilize HyperDry ECO down which is a flurocarbon-free down which exhibits an optimal blend of water resistance, fill power, durability, cleanliness and washability while diminishing it's impact on the environment.

Overall an excellent jacket if you don't mind sacrificing a bit of weight for extra warmth.

- Reviewed by Ultralight Outdoor Gear

Help and advice: All about down filling in sleeping bags


  • PERTEX® QUANTUM PRO with DIAMOND FUSE is highly water resistant and uses unique diamond shaped nylon yarns and an optimum thread count to create a fabric which has an increased resistance to snagging and abrasion
  • 300g of high quality 90/10 Allied Feather & Down Titanium water resistant fluorocarbon-free HyperDRY™ ECO goose down at 800+ fill power, certified non live plucked and non force fed
  • Boxwall construction in body and arms provides superior warmth and eliminates cold spots 
  • Durable Water Repellency (DWR) for effective water shedding
  • Lined with PEAQ Down fabric which is supremely comfortable next to the skin, highly breathable and fast drying


  • Designed for cold weather and high altitude alpine climbing and belaying 
  • Slightly larger chest and bicep dimensions allow for winter layering 
  • Articulated arms for high reach movement, tailored specifically to prevent hem lift


  • The premium down inside this product has been certified through the Responsible Down Standard (RDS) to ensure that it is the most responsibly sourced down available


  • Track my Down™ for comprehensive traceability and information about the down used in this product 


  • Fully adjustable insulated climbing helmet compatible hood 
  • Adjustable face aperture with external cord exits for quick adjustment
  • Rear volume compression for a close fit around head or helmet
  • Stiffened hood peak gives stability and wired edge allows adjustability
  • Internal down baffled face aperture cinches close to face to maximise warmth and prevent heat loss
  • Internal loop and tab on rear allows hood to be rolled down and stowed away whilst not in use in windy conditions


  • Two deep A-line hand-warmer pockets positioned clear of a backpack hip belt or climbing harness 
  • Deep chest pocket on left hand side can fit a map or guide book
  • External easy sliding YKK matte AQUAGUARD® VISLON® zips for use in icy conditions 
  • U-shaped pulls for use with gloves or mitts and zipper garages to prevent water ingress
  • Two large internal mesh drop pockets


  • Full length two way YKK matte AQUAGUARD® VISLON® front zip to prevent water ingress and for ease of use with a backpack or climbing harness
  • Roll over chinguard lined with brushed fine microfleece for comfort next to the mouth and chin
  • Easy grab U-shaped pulls for use with gloves or mitts


  • Elbow darts to improve articulation
  • Low bulk cuffs with internal lycra closure to provide a snug fit and prevent heat loss


  • Internal waist adjustment to pull rear jacket closer to lumbar
  • Adjustable hem with two-sided cinchable drawcord and easy to use cordlocks
  • Low profile internal cord management system to avoid snagging with a harness


  • Own waterproof storage Montane dry bag
  • Rear external Montane hang loop
  • Small weighs: 762g
  • Medium weighs: 784g
  • Large weighs: 802g
  • XLarge weighs: 838g
  • XXLarge weighs: 850g


  • Highly water resistant and tough PERTEX QUANTUM PRO with DIAMOND FUSE and a Durable Water Repellency (DWR)
  • 300g of 90/10 high quality Allied Feather & Down Titanium water resistant fluorocarbon-free HyperDRY goose down at 800+ fill power
  • Certified through the Responsible Down Standard (RDS) and Track my Down traceability
  • PEAQ Down lining
  • Boxwall construction in body and arms
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