Running > Base Layer > Junior > Tops Brand: Nike With its body-hugging stretch, the Nike Pro Core Junior Long-Sleeve Tight Mock is perfect as a first layer under uniforms or training gear. Features flat seams and shaped side seams for reduced chafing. The Nike Pro signature is incoporated at neckline. Fabric: Dri-FIT, 84% polyester/16% elastane plain jersey. £21.99 Add to my Running bag