Under Armor Storm Driver blue cap for men - with water-repellent UA Storm technology provides a great feeling during wear. * material: 90% polyester, 10% elastane * UA Storm1 technology - repels water without reducing breathability * inner hem for excellent sweat drainage * bent peak * flexible Flexfit circumference * circumference for size S/M approx. 53-55 cm * circumference for size M/L approx. 56 – 58 cm * circumference for size L/XL approx. 59 – 61 cm * circumference for size XL/XXL approx. 61.5 – 64 cm * low profile * cut: Stretch Fit * flexfit