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Experience next-to-skin softness and active performance with Smartwool's women’s merino wool underwear and bras line. Designed to meet the needs of active women, our Merino wool garments offer the perfect combination of softness, breathability, and moisture management. Whether you're hiking, running, or enjoying a casual day out, our underwear and bras provide the support and comfort you need.
Our women’s underwear is crafted from high-quality Merino wool, which is known for its exceptional moisture-management and odor-resistant properties. These features ensure that you stay dry and fresh, even during intense activities. The soft, breathable fabric provides all-day comfort, making our underwear ideal for any activity.
For active women, our active bras are a game-changer. These bras offer excellent support and comfort, with the added benefits of Merino wool. The natural elasticity of the fabric allows for a snug fit that moves with you, while the sweat-resistant properties keep you dry during workouts. From hitting the gym, going for a run, or practicing yoga, our colorful and stylish sports bras provide the perfect balance of support and comfort.
Our collection includes a variety of women's Merino wool underwear styles, from full-coverage hipsters to thongs, making sure you find the perfect fit for your unique needs. The breathable nature of Merino wool makes these pieces perfect for layering under any outfit, providing comfort and confidence throughout the day.
Want to shop locally? Smartwool is sold across 5,000+ stores in the U.S. Find one near you with our Store Locator tool.
Q: Is Merino wool good for underwear?
A: Yes, Merino wool is excellent for underwear as it is naturally moisture management, breathable, and odor-resistant, keeping you dry and comfortable throughout the day. Its softness and temperature-regulating properties make it ideal for all-season wear.
Q: Are Merino wool sports bras suitable for high-intensity activities?
A: Yes, our Merino wool sports bras provide excellent support and moisture management, making them perfect for high-intensity workouts and activities.
Q: How should a sports bra fit?
A: A sports bra should fit snugly around the band and cups without causing discomfort, providing firm support without restricting movement or breathing. Ensure the straps are secure but not digging into your shoulders, and the band should sit level around your ribcage. Be sure to visit our sizing chart.
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.
We are currently offering free shipping on orders $89+ placed on smartwool.com.
Shipping based on normal carrier restrictions and delays. We cannot guarantee arrival. 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.

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