Standard Fit: Not too loose or tight over the body. Size up for a roomier fit or to layer with a sweatshirt. Breathable double-knit mesh fabric has a midweight feel (204gsm) Dri-FIT® technology wicks away moisture Heat-applied twill appliques with faux stitching Embroidered Nike Swoosh and heat-applied woven jock tag MLB Batterman silhouette below the back neck seam Material: 100% Recycled Polyester Machine wash, tumble dry low Double Sided Move To Zero is Nike's journey toward zero carbon and zero waste, helping to protect the future of sport. Apparel labeled “sustainable materials” is made with at least 75% recycled content. Brand: Nike Officially licensed by the MLB