The Long Sleeve Air is a technical layer designed for high-intensity training, made to be as light as air but perform like a second skin. With 37.5® technology built into the areas where sweating is high, the Long Sleeve Air offers active thermoregulation that adjusts to your pace and environment. Unlike traditional fabrics that wick moisture away, 37.5® technology uses naturally sourced particles that extract vapor from the skin before it becomes sweat – keeping you dry and comfortable during your toughest sessions.
Combined with lightweight contrasting materials and quick-drying elastane panels, it provides unmatched airflow and lasting comfort. The flatlock seams are strategically placed to avoid irritation, and reflective details offer extra safety during night runs. Lightweight, quick-drying, and naturally odor-resistant, this long sleeve model works with your body – not against it.