LTK SEAMLESS LIGHT Z SS M. Trail. Maille. ATHLETIC FIT". Main Fabrics : SEAMLESS 70%PA 22%PL 8%EA // Mecanical Strecth . 4 way Stretch. Half-zip technical T-shirt designed for running and rapid changes in mountain altitude. With seamless technology and stretch for maximum comfort, it is made from differentiated knit fabric for maximum breathability and moisture wicking. Half-zip fastening. Ultra-lightweight knit. Seamless technology for added comfort, with different knit density to enhance breathability and moisture transfer.