This super lightweight, yet highly thermal rashguard is ergonomically designed using stretch materials that allow for full freedom of movement during dynamic activity. The naturally hydrophobic fabric repels water, ensuring the garment doesnt get heavy and damp when worn in wet conditions. Wear this breathable top as a thermal layer or alone on warmer days to reduce wind-chill. 100% Polyoropylene. Imported. Flat lock construction to help prevent chafing Full sleeve length for maximum 50+ UV protection