The Super Crew is Isaora's highest performance short sleeve, engineered to provide the most comfortable workout. The front panels and sleeves are italian microfiber nylon / lycra stretch knit providing ultimate performance. This nylon knit offers superior abrasion resistance, breathabilty, moisture management and quick drying, while also offering easy care and sun protection. The back panel is a nylon microfiber performance mesh offering high breathabilty, reflective logos on back panel provide visibility at night. Performance fit, not big and not tight.