Men's Seamless Merino Long Sleeve BaselayerThe Merino Seamless Long Sleeve Base Layer is the holy grail of base layers. As cozy as your favorite pair of wool slippers, yet it transfers moisture like water going through osmosis. It's the perfect recipe for a cool weather layer courtesy of its Merino and synthetic fabrics. So, when you need to remain consistently warm on chilly days, look no further than this cool weather staple.