A4 NB4139 Youth Practice Jersey Polyester NB4139 A4 Youth Practice Jersey Practice makes perfect, so make sure the entire team is sporting this quality performance practice jersey. Coordinate: Adult N4139 100% Polyester Warp Knit, 5.9 oz. Trim/Contrast: 100% Polyester Mesh 5.9-oz. moisture wicking odor resistant stain release double-layer yoke V-neck 1x1 knit trim reinforced cover seam finish Sizes: XS-2XL