The Immersion Research K2 Long Sleeve shirt will quickly become your favorite base layer. It fits like a t-shirt, but offers warmth, breathability and all day comfort. Constructed using the proven Polartec Powergrid fleece, the K2 is built to keep you warm season after season. 

• T-shirt fit
• Wicking 4-way stretch grid fleece construction provides a wide comfort range and exceptional breathability
• Cut to provide exceptional mobility
• A multi-sport lightweight layer for a variety of activities
• Flatlock seams to prevent chafing
• Smooth face fabric for unrestricted layering
• Fabric: Wicking grid back anti-pilling fleece
• Fabric Content: 96% polyester, 4% spandex
• Fabric Weight: 153g/m2