A go-to base layer for both winter layering and year-round, breathable comfort, the 200 Oasis Deluxe Long Sleeve Crewe is a lightweight top that’s primed and ready for everything from far-flung travel adventures to weekends skiing at the resort. Featuring 100% merino wool jersey fabric, it’s naturally breathable and odor-resistant to keep you in your comfort zone. Underarm gussets improve range of motion while hiking, climbing or skiing, and offset shoulder seams and flatlock stitching eliminate chafing when you’re wearing a pack or moving fast.