We're wearing the casual and comfortable Fox Defend Short-Sleeve Jersey on all our mountain bike rides, or at least until the jersey needs washing. This chilled-out jersey lives in our after-work bags, being swapped out for different colors throughout the week. The short sleeve layer can easily be worn alone or on top of a summer base layer, including pads. Abrasion zones on the shirt keep the jersey intact during crashes, and the strategically placed mesh patches promote airflow.