Let's talk about base layers for warm weather riding- Mtbr.com
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  1. #1
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    Let's talk about base layers for warm weather riding

    Do they actually keep you cooler? Why? How?

    I started wearing UA compression shirts for extra insulation this winter and you can feel them retaining heat almost as soon as you put them on, and they do a great job keeping a cold somewhat sweaty jersey from touching your soft, bare, skin. So I'm confused as to how an additional layer of moisture wicking material is supposed to keep you cooler.

  2. #2
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    To me, no. But I have been wearing my road sun sleeves a lot now and they seem to work well. Arms are cooler from the sun not directly beating on them.

  3. #3
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    2 layers are warmer. Try one loose layer, start there.

  4. #4
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    Quote Originally Posted by leeboh View Post
    2 layers are warmer. Try one loose layer, start there.
    One tight layer is cooler, because it draws moisture off your skin to be evaporated more effectively, but I only do that on the road bike.

  5. #5
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    Quote Originally Posted by richde View Post
    One tight layer is cooler, because it draws moisture off your skin to be evaporated more effectively, but I only do that on the road bike.
    Is that for abrasion protection? To me base layers and warm weather aren't compatible things. I probably should wear baggies over my bibs and a heavier jersey for a little extra protection but it's hard to beat a roadie kit for comfort and keeping cool.

  6. #6
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    I wear a base layer on warm days too, but only on the road bike. I wear a pack most of the time on dirt...so with the pack against my back I don't feel like the base layer is doing much.

    Rides around an hour I'll wear the roadie kit and no pack, but with the loose shorts for some protection.

  7. #7
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    I started wearing an Endura merino base layer a few winters ago,while I was buying it the guys at my LBS said I should wear a base layer all year round !!
    So I went home and did a search online,results saying pertty much the same thing,they wick sweat away from the body into the material allowing it to evaporate more easily!.
    So I bought a short sleeve On-One base layer for 12 (around $18!) just to give them a try in summer,its 70% polypropylene,22% polymide,8% elastane.Its a snug fit but super stretchy so you dont even know youre wearing it.
    I hate the heat and putting a base layer under my jersey in summer seemed insane to me lol, but it worked great and i was definitely cooler.In temps close to 30'c (85f) it didnt feel any cooler but still much more comfortable and less clammy.
    Now I have a few of the On-One base layers and 2 short sleeve Endura merino base layers for when its a little cooler and long sleeves for winter.
    I wont ride without 1 now,and even wear 1 when Im just out walking now.

  8. #8
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    Quote Originally Posted by richde View Post
    One tight layer is cooler, because it draws moisture off your skin to be evaporated more effectively, but I only do that on the road bike.
    For me, mt biking in the heat, 80-100F, 1 loose layer is cooler, YRMV.

  9. #9
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    Quote Originally Posted by Joss002 View Post
    I started wearing an Endura merino base layer a few winters ago,while I was buying it the guys at my LBS said I should wear a base layer all year round !!
    So I went home and did a search online,results saying pertty much the same thing,they wick sweat away from the body into the material allowing it to evaporate more easily!.
    So I bought a short sleeve On-One base layer for 12 (around $18!) just to give them a try in summer,its 70% polypropylene,22% polymide,8% elastane.Its a snug fit but super stretchy so you dont even know youre wearing it.
    I hate the heat and putting a base layer under my jersey in summer seemed insane to me lol, but it worked great and i was definitely cooler.In temps close to 30'c (85f) it didnt feel any cooler but still much more comfortable and less clammy.
    Now I have a few of the On-One base layers and 2 short sleeve Endura merino base layers for when its a little cooler and long sleeves for winter.
    I wont ride without 1 now,and even wear 1 when Im just out walking now.
    85F? Try 95 with high humidity. Ones UK's " summer" is a New Englanders warm day. Not Hot. For really hot try TX, FL or such. 100-115 or so. Just use what works for you in your own situation.

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