Smartwool Insulated Men's Tops

How to Choose Hiking Underwear

Your choice of underwear can have a big impact on your comfort while hiking. Learn what fabric, style, fit and features to look for.

How to Choose Base Layers

Choosing the right underwear (base layer) is essential—learn how moisture-wicking materials, fabric weight and fit affect comfort in the outdoors.

Layering Basics

Learn the basics of layering clothing so you can stay comfortable outdoors. Includes info on base layers, middle layers and shell layers.

What to Wear Running

Running is more comfortable with the right clothing. This article highlights fabrics and features for warm weather and winter running.