allowing for a 40% expansion of the carbon surface area

There is also a chambray locker loop at the back neck

so your focus can remain on the game and not your body temperature

left sleeve and back neck

Callaway Odyssey Birdseye Polo Shirt - Peacoat Size:S allowing for a 40% expansionThe new All over Odyssey Birdseye polo from Callaway delivers a classic tour look with modern technologies to create the perfect addition to any golfer's wardrobe. Using swing tech technology there are no restrictions with your swing allowing you to focus on your game. Made from stretchy fabric, the Birdseye polo moves with you, complete with Callaway and Odyssey branding. FEATURES: Swing Tech Technology Classic Tour Look Sweats Sweat Away Stretchy