REI Co-op Short Sleeve Men's Base Layer Tops

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 Hiking

Learn about clothes that can help you hike more comfortably, and get strategies for cutting the weight and bulk of clothing in your pack.

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.

What to Wear Backpacking

Learn which clothes to bring backpacking in order to keep your pack light while making sure you'll have everything you need.