Banana Republic , black shirt with white striped collar and cuffs

I am not sure of the fabric of this shirt, but I do believe it is either rayon or polyester. This shirt is a stepped up polished sporty look for casual or office. Great with jeans or dress pants. Length (front collar to hem) 19 3/4” Width 18 1/2” Sleeve (from collar) 24 1/2” All measurements are taken with garment lying flat