No rain, no wind, just a bunch of sun to keep you warm as you enjoy what could end up being the best mountain biking day of the season. Since biking bare is never a good idea, you'll opt for the next best thing. The Gore Men's C5 All Mountain 3/4 Jersey wicks moisture fast to dry quickly, and it's more abrasion-resistant than your own skin. Gore moved the seams away from wherever you'd have a backpack, and fitted the 3/4-sleeves for elbow pads.