High-performance workouts require high-performance gear. Iron Joc Short Sleeve T-shirts are built from state-of-the-art fabric and designed to keep you comfortable and fresh no matter how hard you work or work out. Superior antimicrobial protection that?s guaranteed for the life of the garment combines with ultimate wicking, cooling and antistatic control for unsurpassed comfort. NO MORE STINK! It?s a perfect relaxed fit that?s constructed with thread to eliminate that scratchy feel. 90% polyester/10% spandex.