This thermal base layer is made from lightweight polyester with an eagle eye structure, ensuring excellent breathability and quick moisture transport. With a brushed interior for extra warmth and comfort, this base layer is perfect for day trips or other outdoor adventures. Product Features Brushed interior for extra warmth and comfort Available sizes: S - XXL Available colors: Black, Olive, White, and Navy Weight: Lightweight Size: S - XXL Material: 80% Polyester, 20% Viscose