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Comparing the differences in Odyssey, Tempest & Austral/Siena Jackets

January 12, 2017

Comparing the differences in Odyssey, Tempest & Austral/Siena Jackets

Mont is one of few outdoor clothing companies designing and producing traditional longer length rain jackets for bushwalking/hiking/skiing in wet and/or windy conditions. In comparison to hip-length jackets these mid-thigh jackets provide significantly greater protection in all conditions.

In both the Men’s and Women’s range we have 3 longer length jackets that provide totally waterproof, windproof and highly breathable protection while being durable enough to withstand the pressures of almost any terrain; The Odyssey Jacket in Men’s and Women’s, the Tempest Jacket in Men’s and Women’s, and the Austral Jacket for Men and Siena Jacket for Women.

Odyssey, Tempest & Siena Jackets for Women, similarities and differences between the 3 jackets

Odyssey, Tempest & Austral Jackets for Women, similarities and differences between the 3 jackets

But what are the differences between these 3 jackets?

They are all waterproof, windproof and breathable, and they are all designed for bushwalking/hiking in extended wet weather with a large backpack, skiing in both the resort and backcountry, and almost any other activity in wild weather. They are all thigh length, have a full front zip, high collar and adjustable hood.

The biggest difference between these jackets is the fabric.
The Odyssey and Tempest jackets are made from Hydronaute PRO fabric and the Austral/Siena Jackets are made from Hydronaute fabric.

Hydronaute Pro Fabric, compared to Hydronaute Fabric. Differences between the Tempest, Odyssey and Austral/Siena Jackets

Hydronaute PRO is the most waterproof, windproof and breathable fabric in the Hydronaute range.

Hydronaute PRO performance specifications

  • Waterhead: 30,000mm/24hours
  • MVTR (Breathability): 28,000g/m2/24hours
  • Totally windproof

Hydronaute Fabric, compared to Hydronaute Pro Fabric. Differences between the Tempest, Odyssey and Austral/Siena Jackets

Hydronaute fabric is just as waterproof (30,000mm/24hours) and just as windproof (totally windproof), but is slightly less breathable.

Hydronaute performance specifications

  • Waterhead: 30,000mm/24hours
  • MVTR (Breathability): 20,000g/m2/24hours
  • Totally windproof

In short
You will stay dryer from perspiration in the Odyssey and Tempest Jackets than you will in an Austral or Siena jacket.

Pit Zips/Ventilation
Of the three jackets the Odyssey Jacket is the only one with pit-zip ventilation; YKK Aquaguard #3 gauge zips.

Odyssey Jacket pit zips for controlled ventilation

Front zip configuration

  • The Odyssey Jacket has a YKK Aquaguard #5 gauge zip down the front with a laminated under-zip flap.
  • The Tempest Jacket has dual storm flaps with press-stud closure protecting a YKK #5 gauge zip down the front.
  • The Austral and Siena Jackets have dual storm flaps with press-stud (current Austral/Siena) or hook-and-loop (old Austral/Siena> closures over a YKK #5 gauge zip down the front.

In short
the Odyssey has the simplest front zip with the least bulk because it has no need for storm flaps over the top of the zip.

Pocket configuration

  • The Austral & Siena Jacket have waist height, top-entry cargo pockets with hook-and-loop closures.
  • The Odyssey Jackets have waist height, side-entry hand warmer pockets with YKK Aquaguard zippers.
  • The Tempest Jackets have dual layer waist pockets with both side-entry hand warmer pockets and top-entry cargo pockets.
  • All jackets have an exterior zippered breast pocket.

Other similarities and differences
All three styles of jacket have 3-piece adjustable hoods with a shapeable brim, a draw cord around the face, and a drawcord around the crown to provide complete protection and a perfect fit.

All jackets have hook-and-loop closures at the cuff to keep cold wet blasts out of your sleeves.

All jackets have double ended zippers on the front for greater control over ventilation.

All jackets have waist drawcords. The waist drawcord on the Odyssey and Austral/Siena Jackets is recessed out of the way inside the waist pockets.

Sizing and fit of Mont Shellwear
All jackets are designed with a spacious fit to allow base layers, fleece layers and down layers to fit underneath as needed. Sizing still follows the Mont sizing chart, for example if you’re a Medium or size 10 in other Mont Clothing then you will most likely be the same in Mont shellwear.


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