Lululemon Athletica Men Medium Mens Button Down Shirt Blue Striped Long Sleeve. This versatile button-down features a technical fabric blend with spandex for added stretch and comfort. It is designed with a classic collar, a full button front, and a subtle striped pattern that offers a sophisticated yet athletic look. The moisture-wicking properties and raglan-style sleeves provide ease of movement, making it ideal for commuting, travel, or casual office wear.