Built for high speeds. UPPER: A synthetic upper with a Dynamic Fit Collar provides a close and seamless fit. Internal lining helps to hug the foot for a premium and secure feel.Textured upper offers a nice touch at high speeds. OUTSOLE: A rubber studded outsole provides traction on artificial turf surfaces. WEIGHT: oz.SIZE NOTE: All shoes on are men’s sizing unless they are specifically designated as Women’s or Junior/Youth in the item name. To convert a men’s or junior’s sized shoe to women’s simply add 1.5, example a men’s size 8 shoe is a women’s size 9.5 shoe, or a junior’s size 5 is a women’s 6.5. Full Size Chart here.