NIKE Dri-FIT Miler Long Sleeve UV T-Shirt 100% Cotton Dri-FIT UV Fabric - To help keep you dry and comfortable while helping to protect against UV rays. Flat-Seam Construction - To help minimise chafing, reducing irritation. Reflective Details - For keeping you safe in low light conditions. Rib Crew-Neck - And armholes for comfort and durability.