Nike Park 18 Training TopProduct Code: Youths AA2057 / Mens AA2046VENTILATION FOR DOMINATION. Nike Dry fabric wicks sweat to help keep you dry and comfortable. Mesh back panel provides enhanced breathability. Distraction free performance fit. Ribbed crew neck collar provides a versatile fit. Set in sleeves provide classic football style. Performance fit is streamlined for a fast look and feel. Fabric: 100% polyester.