this shirt is characterized by its sculpture-like smooth curved lines. the lightweight, stretchy material uses cotton for the warp, while the weft is made from special nylon stretch thread that is thin and soft . piping tape made with the same material is sewn on to create a three-dimensional curved silhouette from the shoulders to the cuffs. there are slits on both sides. 60% cotton 35% nylon 5% polyurethane.