Advanced merino wool baselayer trousers that keep you warm in winter and cool in summer.The Icebreaker Men\'s Merino 250 Vortex is a high-altitude, high-performance baselayer designed for skiing, snowboarding, hiking or running. The merino wool fabric regulated your temperature by locking in warmth in cool conditions whilst still allowing your skin to breathe. With stretchy fabric and gusset construction, the pants don\'t hold you back as you move. 100% Merino wool - temperature regulating and odour controllingGusset for mobility and comfortWhite camouflage style Flatlock seams - prevent friction as you move