Powering up a sun-exposed trail or through training circuits at the gym, your tee is often your first and only layer—so the fit and feel have to be completely dialed. That’s why we built ours with ultralight Tempic™ fabric, which uses a honeycomb design that evaporates moisture quickly so it feels smooth and cool during high output or in rising temperatures. Odor-fighting finishes keep smells at bay throughout multi-day adventures and the athletic fit leaves plenty of room to move. Flatlock seams allow for easy layering and sun protection sheds high-elevation rays.