Technical Wicking T-shirt Round Neck Contrast Panels On Sleeves 100% Polyester Quick Dry UPF40+ (U.V. Sun Protection) Ideal for high levels of activity, running, cycling. As wicking fabric allows sweat & moisture to evaporate quickly. Can also be worn as a 'next to skin' layer on colder days in conjunction with microfleece, fleece & hardshell. For hygiene reasons this product is non-returnable unless faulty