2-PACK Athletic Works Boys' Black Thermal Tops - NWT. Athletic Works boys' thermal top is perfect for chilly days. Made of waffle knit, it’ll keep him warm and cozy. The thermal top is designed with a crew neckline, long sleeves, ribbed neckline and cuffs, and a straight hem. Layer a tee or sweater over it for extra warmth when he’s playing outside or heading to school. He'll love the comfort and style of this thermal top. • 60% Cotton, 40% Polyester • Waffle knit • Crew neckline • Long sleeves • Ribbed neckline and cuffs • Straight hem Not on Poshmark yet? Use my code PORTERVIEW to save $15