Just like our best-selling Longtail T® Shirt, our Men’s Longtail T® Long Sleeve Mock Turtleneck is longer in the body to solve Plumber’s Butt when you bend over on the job. (Not that you devote time to CYA or even know what it means – you’re too responsible for that!) Soft cotton jersey is the same fabric that’s in our Longtail T Shirt – hefty, sturdy and, of course, comfortable. Mock neck gives a touch of warmth and a clean look for guys who find turtlenecks too restrictive.