Loose: Generous, more relaxed fit. Lightweight woven fabric delivers superior comfort & durability. Front hand pockets with hidden back storage pocket. Signature Moisture Transport System wicks sweat to keep you dry & light. Super-breathable mesh side panels to dump excess heat. Wide covered elastic waistband for the perfect comfort fit. Shaped hem delivers enhanced coverage without looking big & bulky. Built-in brief for enhanced coverage. Reflective details deliver greater visibility on low-light runs.