New Balance Youth Short Sleeve Tech Tee The Jr NB Short Sleeve Tech Tee is the active essential you need this summer. Featuring a lightweight and comfortable sweat-wicking fabric with a soft feel, our Tech Tee delivers an athletic fit and an antimicrobial finish to help give you maximum movement and breathability. Also has an odor resistant treatment so you can wear with confidence. Our Short Sleeve Tech Tee in Team Red is the perfect all-purpose layer, ready for activity or just cold-chillin'. Material: 100% Polyester.