Montane Flux Insulated Jacket

PrimaLoft Silver Eco Insulation 100g/m sq
Weighs 622g (Medium size)
Code: AW17105
  • £144.99
  • (FREE UK & EU Delivery)
  • RRP £159.99
+ In Stock Now   |   Usually dispatched within 24 hours

Montane's Flux Jacket is a modern classic, by using a mix of 100g and 60g Primaloft combined with lightweight fabrics and informed design, Montane have created an excellent insulated jacket.

Montane says:

Versatile winter insulated mountain jacket employing PrimaLoft Silver Eco insulation technology

Designed for cold and damp conditions in the mountains. Featuring 100g and 60g PrimaLoft® SILVER ECO combined to maximise insulation without compromising comfort, the Flux was conceived to be more than a simple belay jacket. Developed in conjunction with Montane athletes the Flux Jacket is ideally suited to Scottish winter climbing.

Montane's Flux Jacket has been a firm favourite for some of our customers as it's a great piece of kit. Montane have made a few changes but don't worry, they are just small improvements in the fabrics, not a complete overhaul. And they have even managed to make it lighter!

It still has the high warmth to weight ratio of Primaloft combined with new lightweight face and inner fabrics. Only Down provides a higher warmth to weight ratio but with the Flux you get near indestructibility combined with all the right design cues.

Feature wise you've still got all your favourites like the fully adjustable hood, four external pockets and one internal mesh pocket. The cuffs have an adjustable velcro closure and the front zip is two way. We love it.

- Reviewed by BasecampGear


  • Constructed from 100% recycled PERTEX® QUANTUM ECO fabric that is completely windproof, showerproof and fast drying 
  • PEAQ Synthetic ECO lining that is supremely comfortable next to the skin, highly breathable and fast drying


  • 100g PrimaLoft® SILVER ECO in the body and 60g PrimaLoft® SILVER ECO in the arms and hood
  • Extra layer of 60g PrimaLoft® SILVER ECO in front of hand pockets


  • Designed for all round mountain activities 
  • Slightly larger chest and bicep dimensions allow for winter layering 
  • Articulated arms for high reach movement, tailored specifically to prevent hem lift 


  • Fully adjustable insulated climbing helmet compatible hood 
  • Rear volume compression for a close fit around head or helmet
  • Stiffened hood peak gives stability and wired edge allows adjustability
  • Internal elastic loop and hook 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
  • Two external zipped chest pockets
  • Easy sliding YKK VISLON® zips throughout for use in icy conditions
  • Internal left hand stretch mesh pocket
  • Stuffs into right hand pocket with internal carabiner loop


  • Full length two-way YKK VISLON® front zip for ease of use with a backpack or climbing harness
  • Internal storm flap with press-stud to secure hem and prevent water ingress
  • Roll over chinguard lined with brushed fine microfleece for comfort next to the mouth and chin
  • Easy grab ergonomic grippy pulls for use with gloves or mitts


  • Elbow darts to improve articulation
  • Shaped cuffs with adjustable hook and loop tabs for ease of use with gloves or mitts


  • Adjustable hem with two-sided cinchable drawcord and easy to use cordlocks


  • Rear external Montane hang loop
  • Small weighs: 596g
  • Medium weighs: 622g
  • Large weighs: 638g
  • XLarge weighs: 678g
  • XXLarge weighs: 708g
  • 100% recycled PERTEX QUANTUM ECO fabric is completely windproof, showerproof and fast drying
  • 100g PrimaLoft SILVER ECO in the body and 60g PrimaLoft SILVER ECO in the arms and hood
  • Extra layer of 60g PrimaLoft SILVER ECO in front of hand pockets 100% recycled
  • PEAQ Synthetic ECO lining
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