The Nike Pro Therma Extreme Long-Sleeve Mock is perfect as a first layer for wearing under athletic uniforms and training in extremely cold conditions. Dri-FITŪ fabric is brushed on the inside for maximum warmth and comfort. Contrasting flat seam construction. Seams have been aligned below shoulder for enhanced mobility and less friction. Swoosh design trademark heat transfer at left front neck band. Nike FITŪ trademark heat transfer at lower right. 90% polyester/10% spandex. Imported.