Smartwool 250 Baselayer Zip-T - Men's SealLine allowing for greater customization

allowing for greater customization

Silicone center of Orbiter Magnetic Socket and dash ball shape allow smooth adjustment and rotation for the perfect viewing angle

The compact size

Pump Cup oil

Food-safe containers with interchangeable caps

Smartwool 250 Baselayer Zip-T - Men's SealLine allowing for greater customizationDescription Features & Specs Size Chart Smartwool has updated the fit of their Men's Merino 250 Base Layer 1 4 Zip to improve functionality while also enhancing aesthetics. As one of their 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