Giant Pro Winter Cycling Base Layer is a high performance cold weather base layer with a host of technical features such as isolated compression areas & moisture management. The space age Dream Fel fabric is ultra elastic & seamless quick-dry & lightweight so you can ride longer in greater comfort. Wear it with the Giant Team Replica Long Sleeve Cycling Jersey. Features- Advanced polypropolene Dream Fel fabric- Ultra elastic & seamless- Ergonomic fit with isolated compression & ventilation areas- Quick-dry & light weight- Moisture transfer & lightweight- Anti-microbial & chemical resistance Sizes XS S M L XL