Nike Core Baseball Pants - Boys' Grade School Look good, stay comfortable and keep your legs healthy in the Nike Core Baseball Pant. This poly warp knit baseball pant is loaded with features to help boost your performance on the diamond. Reinforced knees provide exception durability, giving you a fearless approach to sliding for home, or making that diving grab. The Swoosh design trademark on the uppe right back hip enhances your style in classic Nike fashion. Other features include a brass zipper, two metal snap closures, two back pockets, performance five-belt loop system and an elastic leg opening. 100% polyester. Imported.