Twin needle stitching and taped back neck. Lockstitched cuffs. Size Chest (to fit) S – 38″ M – 40″ L – 42″ XL – 44″ 2XL – 46/48″ 3XL – 50/52″ 4XL* – 54/56″ 5XL* – 58/60″ *Available in 4XL and 5XL