Model [ NK11320963]Nike Sportswear Tech Knit Men's Polo Shirts Carbon Heather/Black/Cool GreyBreathable WarmthThe Nike Sportswear Tech Knit Men's Polo features lightweight knit fabric with a perforated panel for lightweight warmth and breathable comfort. BenefitsNike Tech Knit fabric is soft, light and warm. Perforated back panel provides enhanced breathability. Dropped back hem for comfortable coverage. Raglan sleeves offer unrestricted movement. Three-button placket for custom coverage Product DetailsFabric: 52% cotton/48% nylon. Machine wash.