Exceloft or Ajungilak?

[John Frieh]

Does/has anyone owned or used a jacket that had either Exceloft (Montbell's own syn fill fabric) or MTI Performance by Ajungilak (Mammut is using it this year)? I am most interested in fill life: how well does the fill retain it's loft over the lifetime of the garment? How does/did it compare to other syn fills? Other comments? Warmth?

 

From Montbell's webpage:

MontBell uses our own Exceloft synthetic insulation in sleeping bags to help trap warm air and retain loft. Not only is Exceloft great at keeping you warm, but the combination of 8-denier compacted polyester tubing with extra-thin, 0.7-denier polyester thread makes the insulation remarkably compressible. In addition, Exceloft absorbs very little water, making it highly resistant to saturation and extremely quick to dry.

 

From mountain tool's website (I couldn't find anything on mammut's webpage):

insulation: 200 g/M MTI Performance (by Ajungilak) - a micro fiberous, multi-hole and conjugated hollow fiber insulator which is minimum weight, durable and highly compressible.

 

TIA!

[darstog]

NOLSe,

You know a fair amount more about synthetic insulation than I do, but I do own the Mammut Cloud jacket, which has an uber-thin layer of MTI performance. Unless I'm mistaken, it's last year's version of the stratus. I've been really impressed with the insulation. I've talked to the Mammut rep once about the insulation, and he was saying that there are 3 kinds of insulation in that fill, a 3-denier, a 5-denier, and a 7-denier (I may be mistaken on the numbers, so say +/- 1 denier). The Montbell looks to have 2 types of insulators, an 8 and a .7 (how can they make .7 denier insulators, that's crazy thin?). So I'd imagine that the Mammut must be a little more durable, wouldn't you think that once the .7 denier insulation was shot, you'd lose some of your warmth? Anyway, the cloud is quite warm for what it is, but remember how light that is. So it's not like an inferno in my jacket. But this year, they've put "double the insulation into the stratus hooded jacket." I think this would be a little more functional. Either way, I'm pretty impressed with the warmth from the uber-thin layer of my cloud. To me, it's a perfect piece for belays on cool routes. It's not a full on belay jacket. Even the Stratus (with double the fill), wouldn't be a full on belay jacket for cold routes. With double the fill, I'd imagine it would be like the Mountain Hardware compressor or the REI gossamer. I'd trust the Mammut over the Montbell. Why not Primaloft? Wild Things Nevado? Epic shell. If you want to check out my cloud, I'll be at the circuit gym around 6ish.

 

Reply to Darstog:

Some helpful information; some gobbledygook jibberish.

 

Reply from Darstog:

Par for the course.