There's a reason for why mock-neck shirts have become so popular in men's fashion – because they bring the perfect mix of athletic wear and casual wear to the table. Take a look at our new Long Sleeve Zip Mock. Perfect for working out or for lounging around – ultimate comfort and ultimate style made with our exclusive Icefil fabric that cools your body temp 3 to 5 degrees, moisture wicking fabric, soft to the touch material and UPF 50+ sun protection.