The 10 Best Women's Merino Wool Long Underwear
We spent 25 hours on research, videography, and editing, to review the top selections for this wiki. Merino wool is prized because it comes from sheep who survive in the New Zealand Alps, making it remarkably warm. Plus, it is sustainably-sourced. We found women's long underwear made from this material that are flattering, comfortable, and will regulate your temperature during outdoor adventures. You'll love layering these beneath outerwear, or lounging at home in them. When users buy our independently chosen editorial picks, we may earn commissions to support our work. Skip to the best women's merino wool long underwear on Amazon.
October 15, 2018: We expanded the list substantially to ensure there are light, mid, and heavyweight options in tops and bottoms. We also focused on more form-fitting choices.