Men's ODLO Blackcomb Warm Performance Long Sleeve Half Zip Base Layer. The ODLO Men's Blackcomb™ Warm Long Sleeve Half Zip Base Layer is spectacularly efficient at thermal regulation providing insulating warmth when needed and dissipating excess heat when you are highly active. Supremely comfortable as a result of its laser cut fabrication and seam free body design. The ODLO Men's Eco Warm Blackcomb™ Thermal Long Sleeve Half Zip Base Layer is a Foundation Layer anatomically designed for the unique requirements of the athlete wearing it. ODLO® Construct nearly all their garments at their own factories within the EU.