When you roll up to the registration table just as an unexpected storm front unleashes swirling gusts of frigid air, you'll be happy you brought along your Castelli Men's Long-Sleeve Prosecco Wind Baselayer. Made from Castelli's breathable, medium weight Prosecco fabric, this base layer provides much appreciated warmth and wicks sweat out and away to keep you dry and warm as you settle into a rhythm 250m off the start line.

As good as the fabric is, the star feature of this baselayer is its Gore Windstopper windproof membrane on the front panel. Windstopper means it'll do its job no matter the conditions, so you'll be riding comfy when the wind whips up and the rest of the field is chilled to the bone.