What Our Gearhead(R) Experts Are Saying:"This base layer is my go-to for high-intensity activities. It keeps me warm without overheating, wicks away moisture, and doesn't pick up odors, even after a long day. The slim fit and thumbholes make it perfect for layering during cooler weather adventures."For performance-driven comfort during high-intensity adventures, the 125 ZoneKnit(TM) Long Sleeve Crewe is the ultimate base layer. Combining TENCEL(TM) Lyocell and merino wool, this featherweight top offers natural breathability, moisture management, and temperature regulation. Its ZoneKnit(TM) body-mapping technology provides targeted warmth and ventilation where we need it most, while the slim fit and raglan sleeves allow for low-bulk layering and unrestricted mobility. Thumbholes keep sleeves in place, and the drop tail hem offers additional coverage during outdoor activities. Sustainably crafted, this base layer keeps us comfortable and confident on any adventure.