New Balance Women's Long Sleeve Tech Shirt The NB Long Sleeve Tech Tee is a true essential. Made of a soft, performance, sweat-wicking fabric in an athletic fit. Plus, an antimicrobial treatment helps you stay fresh on the field or in the street. • 100% polyester • Athletic fit • Sweat-wicking (NB DRY) and odor-resistant treatment (NB FRESH) • NB heatseal at top right shoulder