killclimbz

It's a shell. If it has insulation it's going to be more than just a shell. You should be fine as long as it doesn't sport insulation.

TABLECHAIRS

Does anyone have experience with the fjallraven waterproof/breathable fabric "hydratic iq"?
It is supposed to stop breathing when it gets colder, the pores in the fabric close up, which sounds like it could be bad unless your body heat is enough to warm it when you sweat??
I'm looking at buying a jacket online.

Kjerstin Klein

I am not familiar with that brand but it sounds a lot like THERMORE...it is probably the insulation pores that are constricting not the pores of the breathable membrane. It is critical to have breathability even in the cold for moisture transfer. If it is like THERMORE, however, then it is considered a 'smart' insulation that reacts to the body heat you are putting off and as it warms up there is a structural change in the insulating fibers that allows for more heat to escape. Conversely, when the temperature drops the fibers constrict to restrict the release of body heat.

The reason these fibers are rated so highly is because the challenge in active, outdoor sports is to remain at a constant temperature - balance is more important because it allows the body to adapt instead of sea-sawing from hot to cold.

Hope this helps!

See ya on the slopes!

__________________
Kjerstin Klein from
The Jib Shop

skatesurfsnow

YouTube - Gore-Tex, What It Is And How It Works
This might help you, let me know if!

Jim

I'm wondering about the Columbia brand of jackets and pants, they don't list waterproof or breathe-ability numbers, how can we judge these to compare with others?

J.Schaef

This is just copied and pasted off Sierratradingpost.

Examples of Waterproof/Breathability Ratings for Major Manufacturers

Columbia Sportswear Omni-Tech® (Adults) 10,000/10,000
Columbia Sportswear Omni-Tech® (Kids) 5,000/5,000
Event Event 30,000/22,000
Gore-Tex® PacLite® 28,000/15,000
Gore-Tex® Pro-Shell 2-Layer 28,000/25,000
Gore-Tex® Pro-Shell 3-Layer 28,000/25,000
Lowe Alpine Triplepoint® 3-Layer 20,000/20,000
Marmot MemBrain® 20,000/25,000
Marmot PreCip® 15,000/12,000
Marmot PreCip Plus® 25,000/15,000
Mountain Hardwear Conduit 20,000/20,000
Sierra Designs Hurricane 8,000/2,000
Sierra Designs Microlight 600 N/A

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11/12 Days riding:
63

12/13 Days riding
51

CustomX - J-rad

Damn, didn't know gore-tex had a rating. lol, i guess you gotta search for it, but i love my gore pants so much i dont give a shit what it is, they are beautiful, uber water-proof and dry suuuupppperrrrr fast

Jim

Thanks, it would be nice if they just put it in the specs like everyone else, for example I don't think omni tech is the only kind that Columbia has...

Incogneato

i wouldn't just automatically trust those numbers. gore has never released its numbers (other than RET) so they are either made up or some shoddy at home test or something.

J.Schaef

They may not be 100% accurate, but even a "shoddy at home test" should be able to give you a reasonable estimate (which is all that is claimed by sierra trading post)

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11/12 Days riding:
63

12/13 Days riding
51