The world's most in-depth and scientific reviews of gear

Compare Base Layers

Top 11 Product Ratings

select up to 5 products
Score Product Price Our Take
Editors' Choice Award
This top is the gold standard for staying warm, dry, and comfortable during and after all of our outdoor adventures
Implementing new and innovative technology, Patagonia brings us a seamless base layer that feels unbelievable
Best Buy Award
A fine Merino base layer at an entry-level pricepoint
This doesn’t stand out among the crowd, but silently gets the work done without a need for recognition
Thoughtful features like thumb loops and an extra long cut will surely help add a little extra warmth to your winter
Best Buy Award
Lightweight, versatile, and affordable, this 3-season powerhouse is ready for warmer-weather adventures
Top Pick Award
Ready for all-day activity, but be prepared with a well-layered system if you're taking this out in the cold
Intricate design and body-mapping technology, but falls somewhat short of hitting the mark in terms of fit
A loose fitting, comfortable merino wool top for trail and for town
Ounce-for-ounce, this ultra-thin base layer is by far the warmest of our lightweight selections
Excelling in breathability, this lightweight synthetic model is made for working up a sweat in the cold