Combining the form-fitting ethos of Icebreaker's Anatomica collection with ribbed styling & 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 & extended travels, the Anatomica features our lightweight 180g/m² rib corespun fabric, which uses nylon fibers wrapped in soft, breathable merino wool for durability & strength that retains next-to-skin softness. Icebreaker also included a touch of Lycra for active stretch, & flatlock seams to eliminate chafing when you’re on the go.