Combining the form-fitting ethos of Icebreaker\'s Anatomica collection with ribbed styling and corespun fabric. The Men\'s Anatomica Rib Short Sleeve Crewe is equally stylish, comfortable with excellent performance. Ideal as an undershirt or worn alone on trail runs, hikes and extended travels, the Anatomica features our lightweight 180g/m² rib corespun fabric, which uses nylon fibers wrapped in soft, breathable merino wool for durability and strength that retains next-to-skin softness. Icebreaker also included a touch of Lycra for active stretch, and flatlock seams to eliminate chafing when you’re on the go.