Perforations and Gore-Tex Pro Shell Leather

Dailies -


Alpinestars_365_Jacket.jpgI just went on my first long ride in the new Alpinestars 365 Gore-Tex Leather Suit. It was dry and sunny, so I can’t tell you how well it keeps out water, but I can tell you the perforations aren’t there to vent air. So what do they do? Allow the Gore-Tex membrane laminated to the underside of the leather to vent water vapor.
Expecting all the tiny holes to flow air like a wind tunnel, I put on a
sweater when I set off in the 50-degree dawn temperatures, but it turns
out riding in the suit is just like wearing non-ventilated leather. At
75 degrees, having long since ditched the sweater, I had to unzip the
jacket halfway to stay cool.

Gore-Tex Pro Shell Leather is treated with a dye capable of reflecting
30 percent of the sun’s energy, allegedly keeping you cooler than if you
were wearing standard black leather. Without trying this and a standard
suit back-to-back, I can’t comment on the dye’s effectiveness.

On initial impressions, it feels like the suit’s going to be a bit too
hot to wear in the heat of the summer, at least at relatively mild
speeds. Perhaps eVent would make a better membrane for a true
all-weather a motorcycle suit.

I’ll keep you updated.

  • shinigami

    If you do a bit of homework you’ll find event and Gore’s latest high end material perform pretty much the same.

    Aerostich has had a Gore Pro Shell suit available for a couple of years now (complete with the IR-reflecting dye), known to be rather on the warm side. Probably best used under 65 F.

    As you found with the A* suit, the Aerostich Transit doesn’t flow very well either, and it has no venting except the front zip.

    The real question is, why does A* charge a thousand dollars more than Aerostich for basically the same technology?

  • BL

    still got clammy in there eh?
    in my ‘testing’ those laminates don’t vent nearly as well as they’d have you believe…but they sure do charge you for them.

  • Benjamin

    That’s disappointing. Extremely. Here in Texas, going without perforations is crazy – unless it’s over 100.

  • Chris

    Hey Benjamin, maybe my mental reading voice needs practice but… If you’d have to be crazy to go without perforations in Texas then why would it be any different if it’s over 100? I’m guessing you simply don’t wear leather at that point.

    • Zeitgeist

      I think he means over 100mph. lol

  • Aaron

    Nope what he means is that once the air temp goes significantly over body temp perforations don’t keep you cool they heat you up. much like in California when riding inland in over 105 deg weather you close up as many vents as possible to stay “cooler”

    • shinigami

      Well, you know, there is such a thing as evaporative cooling- for longer rides, a cotton t-shirt and a camelbak bladder of ice water (worn inside your jacket threading the hose through your left sleeve in a manner that allows you to squeeze it under your left arm while using your left hand to open the bite valve…) works wonders in dry conditions over 100F…

      (Of course one would be well advised to pull over to apply the water…)

  • Johan

    I one read something about cooling clothes for motorcyclists and construction workers:
    Not that it’s ever over 100 F in Belgium…

  • aaron

    yeah there’s the Sahara vest for that as well. try this out:
    I use a different method of cooling most of the time. If its that hot inland I head for the coast :) gotta love California.

  • Frank

    Riding over 105F problem, SOLVED!

    this is just awful