Features of the Mountain Hardwear Men's Kinetic Tight Your go to baselayer Designed for comfort and Performance featuring Polartec Power Wool Polartec Power Wool is a design breakthrough combining the distinct advantages of natural and synthetic fibers in a bi-component fabric Superior wicking and fast drying Extremely versatile 153 g/m2 fabric weight, Highly breathable and naturally odor resistant Flat lock seam construction and low profile waist band Stretch and shape recovery