Best Merino Wool Clothing (2025): Base Layers, Hoodies, Jackets & More

Merino wool is a super fiber. The best merino wool clothing somehow manages to be comfortable in 95-degree-Fahrenheit heat, and merino base layers keep you warm well below freezing. Unlike synthetic fibers derived from petroleum, merino wool is natural and renewable. Merino wool’s versatility means there’s a bewildering array of blends and options to choose from. Here are our favorite merino wool products that we've tested by wearing and washing (usually in cold water, and hung to dry) over the course of months and even years in some cases. Once you're done here, don't forget to check out the rest of our apparel guides, like the Best Puffer Jackets, the Best Hoodies, and the Best Hiking Boots. Updated March 2025: We’ve added new base layers and T-shirts, and we’ve updated links and prices throughout. Why Is Merino Wool So Great? AccordionItemContainerButton LargeChevron Merino wool is great because you're stealing a sheep's ability to keep itself warm or cool based on the temperatur ... Read full article.