The weather will be 47/48 at the start tomorrow? Will wearing it slow me down? Not a troll post. Sir Mo wear them all the time. I got a Nike one few years ago that I just break opened. Will this trap too much heat later in the race. They feel very lightweight.
1. Start with them.
2. If you get hot, pull them down.
3. If you're still hot, take them off and throw them away
The beauty of arm sleeves is they are very easy to remove or push to half length without blinding yourself or losing your bib.
probably less than wearing socks would. Which is to say, no, they won't.
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