Russell Athletic Youth 5 Tool Full-Button Baseball Jersey 100% wicking polyester diamond knit with color secure® technology that helps prevent dye migration. 100% polyester tricot mesh inserts with color secure® technology that helps prevent dye migration. Dri-Power® Moisture Wicking Technology. Tagless label. Outside locker label. Full-button jersey. Buttons spaced for easy embellishment. Set-in sleeves. Contoured bottom.