The Ultimate Riding Jacket?

buffalo's were designed to be worn snug, right next to the skin. the pile wicks sweat well and doesn't chill. i've found them to be very warm, stiflingly so sometimes, even with all vent slits open. i'd venture they'd be too warm for sustained cycling.

That one doesn't have pile. It's a lighter weight and works well with a helly etc under. Good for winter MTB in the wind/mountain walking. Too hot for much else.