All-Season Base Layer Perfection.

The Men's Skyliner and Women's Pinnacle base layer series are a highly versatile, all-season shred companion featuring EXTEN Fabric. These base layers work with your mid-layer and technical outerwear to keep you comfy, warm, and dry for a wide variety of activities. EXTEN Fabric Technology is a highly versatile brushed 4-Way Stretch, breathable performance fabric with a Soft-Touch next-to-skin feel.