It's a progression, warm to cold, say 65° and cloudy down to 40° and raining: Start with thin poly SS T, SS jersey, sunsleeves. Add vest. Add arm warmers. Exchange vest for jacket. Start with LS moderate-to-thick poly baselayer, Thick but well ventilated LS jersey, add vest, change to jacket. I prefer non-waterproof jackets which one can barely suck air through. One can't be cooled by evaporation under a waterproof garment, thus some rain must be able to get in or I overheat at any pace above a dawdle.
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