Shop women’s base layers designed by Smartwool® to help regulate temperature, manage moisture, and provide breathable comfort in any condition. Crafted with the finest Merino wool, these pieces offer soft, next-to-skin comfort, breathability, and odor resistance, making them essential for everyday wear and outdoor performance. These women’s base layers are designed to move with you, offering a comfortable fit that supports layering in changing conditions.
Experience the innovation of Intraknit™ Base Layers, featuring body-mapped ventilation and insulation zones for optimal thermal regulation and flexibility. With these technical advancements, combined with the softness and durability of Merino wool, our base layers are among the best options for comfort and performance across a wide range of activities.
From trail days to everyday wear, our collection has you covered. Explore the versatility and durability of the best women’s base layers and discover styles designed for comfort, movement, and layering. Shop women’s base layer tops, bottoms, and full sets designed for every condition.
Want to shop locally? Smartwool is sold across 5,000+ stores in the U.S. Find one near you with our Store Locator tool.
Women's Merino Wool Base Layers FAQs
Should base layers be tight?
Base layers should fit snugly against your skin to maximize moisture wicking and thermal efficiency without restricting movement. They're designed to act as a second skin that moves with you, offering warmth and comfort.
What are base layers for?
Base layers are designed to keep you comfortable in a variety of conditions by managing moisture, providing insulation, and regulating body temperature. They are the foundation of layering for outdoor activities, offering protection against the elements.
Are merino wool base layers itchy and okay to wear next to skin?
Our Merino wool base layers are crafted from fine fibers that are softer and more flexible than traditional wool, ensuring a comfortable, itch-free experience. They're designed for sensitive skin and provide all-day comfort.
Naturally versatile, renewable, and totally comfortable. Learn more about Merino wool and all the benefits that come with wearing it for all your outdoor pursuits.
We love Merino wool for its natural odor-resisting and moisture-managing abilities. Whether we’re running, biking, hiking trails, hunting, and skiing or snowboarding, Smartwool socks, base layers, and apparel help us keep us comfy and dry all day long.
We want you to be 100% satisfied and comfortable with your Smartwool purchase. Our sock, clothing, and accessories size charts are specifically designed to help you find the best fit for men’s, women’s, and kids’ Smartwool products.
Free Return Policy Smartwool offers free returns within 30 days from the date of purchase. Items must be unused, unwashed, and unaltered.
Store Returns Return the unworn item(s) to the store where you originally made the purchase for a refund or exchange.
Online Returns Return unworn item(s) purchased at smartwool.com 30 days from the date of purchase for a complete refund. Initiate a return by accessing your order history and selecting “Return Items."
Refunds may take up to 3-5 weeks to process due to the time often required for shipping and bank processing. Exchanges are not available.
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Free Shipping
Free standard shipping on orders $89+
Offer is valid for the continental US excluding Alaska, Hawaii, Puerto Rico and any US territories, as well as PO Box addresses. Delivery days are Monday-Friday, excluding US federal holidays. Free shipping may not be available for some customers.
SHIPPING RATES & INFO:
$7 Standard: 4-7 business days No weekend delivery. NOT available for orders to AK and HI.
$17.50 Express: 2 business days No weekend delivery. Available for orders to AK and HI.
$25 Priority*: Next day No weekend delivery. Available for orders to AK and HI.
