Montane Hydrogen Extreme Insulated Jacket

Polarloft Alpha Direct Insulation 120g/sqm
Weighs 486g (Medium size)
Code: AW19332
  • Now £176.99
  • (FREE UK & EU Delivery)
+ In Stock Now | Usually dispatched within 24 hours

Blending the high warmth to weight ratio of POLARTEC Alpha Direct with a super breathable PERTEX QUANTUM AIR shell for the ultimate breathable insulation layer.

Montane says:

Lined with super packable high loft POLARTEC® Alpha Direct insulation throughout, the Hydrogen Extreme Jacket is designed for fast paced mountaineering and climbing in cooler conditions. The supreme breathability of the PERTEX® QUANTUM AIR outer shell offers all day comfort, whilst the DWR finish will still shed light rain.

Montane Logo at Ultralight Outdoor Gear|

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

Montane's Hydrogen Extreme Insulated Jacket uses Polartec Alpha breathable insulation, a more modern version of a lightweight fleece, that keeps you warm but lets sweat out, even when active. Polartec Alpha Direct insulation is basically the same but with the mesh liner removed, so you get more unimpeded airflow (not to mention less weight and bulk) without sacrificing warmth. It also feels super soft against your skin!

Designed to be worn when you are active - so on the move - there are alternative insulation garments that are more suited to wearing around camp - Polartec Alpha Direct is about keeping you vented even though you are also being kept insulated. Weight for weight Polartec Alpha is only about half as warm as PrimaLoft so the king of insulation keeps its crown - but Alpha has its place.

With this jacket the outer fabric is constructed from an open structured Pertex Quantum Air which enables the insulation to breathe fully. A good match as you wouldn't want the outer layer to cancel out the breathability of the inner.

Features wise you get 2 fleece lined hand warmer pockets and 2 large Napoleon style pockets ideal for storing your map, spare hat, gloves etc. The hood has an excellent stiffened brim and has single drawcord adjustment on the rear of the hood. The hem can be cinched in with the 2 drawcords and the wrist cuffs have velcro adjustment.

- Reviewed by Ultralight Outdoor Gear

Help and advice:Synthetic Insulation explained at Ultralight Outdoor Gear
  • Fully adjustable roll-away insulated climbing helmet compatible hood with stiffened peak
  • Articulated arms for high reach movement
  • Full-length two-wayYKK VISLON® front zip with internal storm flap
  • Two insulated hand pockets with YKK zips
  • Two external zipped Napoleon chest pockets with YKK zips
  • Hook and loop adjustable cuff tabs
  • Adjustable hem with cinchable drawcord
  • Small weighs: 474g
  • Medium weighs: 486g
  • Large weighs: 506g
  • XLarge weighs: 530g
  • Back length: 75cm (M)


  • PERTEX® QUANTUM AIR wind resistant outer with DWR
  • 120g/m2 POLARTEC® Alpha Direct high loft fleece lining
Be the first to review Montane Hydrogen Extreme Insulated Jacket. Write a review ›
Contact us with any questions you have about this product