The Icebreaker Women's Oasis Long Sleeve Crewe is a highly-rated neon base layer top that is perfect for outdoor adventures. Made with Icebreaker's Merino wool fabric, this top offers excellent insulation, moisture-wicking properties, and odor resistance. The crewe neck design and slim fit make it perfect for layering under other clothing. Whether you're hiking, camping, or skiing, this top will keep you warm, comfortable, and fresh.