Introducing Intraknit; where 25 years of Smartwool’s expertise and merino wool knowledge result in a superlative base layer series. The Men\'s Intraknit 200 Crew Neck is a performance-orientated piece made from 200 weight blended merino sport yarn. It combines the warmth, moisture management and odour resistance of merino with the durability and enhanced drying times of polyester. Using an engineered knit construction and 3D mapping, the Intraknit technology seamlessly combines ventilation, insulation, and articulation; enabling you to perform better, it’s perfect for high-intensity activities across the winter months.