The Shankbridge Mill was built in 1792 between the towns of Kells and Connor in N. Ireland and that's where the linen used to make this shirt was made. I suppose that accounts for credibility. Linen is known for its breathability, durability, versatility and is a natural textile made from flax fibers. It's super strong and dries faster than cotton, so this shirt will save you time and likely outlive us all. Chest - 23" Length - 27" Shoulders - 18.5" Arms: 35.5"