The Under Armour boys' set is made of smooth tricot knit for added durability. The material wicks sweat and dries quickly. The jacket has a zip fastening, sleeve stripes, ribbed cuffs and hem, and in-seam pockets. The tracksuit bottoms have an elastic waistband, side stripes, a tapered fit, and in-seam pockets. The inside is softly brushed for warm comfort.