Men's Smartwool Merino Base Layer 1/4 Zip - SW002821-M02 Size:L - Racerback design lets you

- Racerback design lets you move naturally through your workout or competition

The propulsive feeling of FuelCell is combined with a thinner carbon fiber plate

Let the Nike React Pegasus Trail 4 take you there and back again with its supportive and springy feel

Gusset lining: 84% nylon/16% spandex

Most people don’t make a routine out of a physically demanding activity that requires persistent effort to get any good at

Men's Smartwool Merino Base Layer 1/4 Zip - SW002821-M02 Size:L - Racerback design lets youSmartwool updated the fit of our Men's Classic Thermal Merino Base Layer 1 4 Zip to improve functionality while also enhancing aesthetics. As one of the heaviest base layer tops and best base layers for cold weather, this garment uses 100% responsibly sourced Merino wool, shoulder panels, and a flatlock seam construction to help minimize chafing as well as help keep you comfortable and temperature regulated as you enjoy high intensity skiing, hiking,