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NEW CUSTOMERS  - SAVE 15% - USE CODE: NEW2TREKT. EXCLUDES SELECT BRANDS/ITEMS.

Women's Baselayers & Underwear

76 Products

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  • Made with 100% Merino Wool, the Woolies 150 is extremely soft on skin. Wicking properties pull sweat away from the core to provide for more comfort. Excellent as a baselayer, it can also be used as a standlone on more moderate days.

    Our Price:
    $65.88
  • Like an extra layer of skin, the Microweight Tee moves sweat and moisture away from the body on those hot, muggy trail adventures. With great breathability and light weight, take the Microweight with you on hot, warm treks.

    Our Price:
    $42.00
  • Ibex's heaviest baselayer is cut from 18.5 micron, 220 g/m2 Merino wool. You can rock this all day baselayer on the coldest adventures of the year and close out the evening at the lodge, all while wearing the same base.

    Our Price:
    $77.00
  • Smartwool's best selling, and warmest, baselayer, just got a little more refined with an improved fit, chafe-free seam construction and panels that offer more comfort with a pack.

    Our Price:
    $66.50
  • The Women's Lightweight Zip T features sculpted sleeve panels which eliminate chafing and provide a body enhancing fit. The back bottom hem is a little longer for increased coverage against chilly gusts.

    Our Price:
    $47.50
  • Smartwool constructed this tank's fit to be longer in the body, with a shaped bottom opening that's higher on the sides, and lower in front and back. An updated shoulder construction fits over racer back-styled sports bras.

    Our Price:
    $36.00
  • Made from Smartwool's warmest baselayer fabric, these bottoms will keep you warm even on the coldest summits. Features a covered elastic waistband, flatlock seam construction and a midrise waist.

    Our Price:
    $57.00
  • Redesigned for spring, Smartwool's new Women's Microweight Bottom features a women's specific wide waistband for a body enhancing fit. Flatlock seams eliminate chafing for superior comfort.

    Our Price:
    $45.00
  • Smartwool's best selling, and warmest, baselayer hits a home run with chafe-free seams and 100% Merino wool Fabric. Extremely warm and soft on the skin, you're going to love the Midweight Zip T on and off the mountain.

    Our Price:
    $63.00
  • Smartwool's Lightweight Bottoms feature seam construction throughout the legs to offer a better fit and a performance look. Perfect for higher aerobic activities in colder weather.

    As Low as:
    $42.50
  • Instead of regular side seams, this women's crew features sculpted side panels which eliminate chafing and enhance the fit to your body.

    Our Price:
    $59.50
  • The NTS 250 pattern hoody is out the door already. Crisscross neckline and thumbholes thwart the cold on cross-country trails. The hood works with your ponytail and helmet for the dawn commute.

    Our Price:
    $78.00
  • This medium-support bra embraces your body with non-stop, moisture-wicking comfort.

    SAVE 30%

    Lole Jazzy Bra

    Our Price:
    $40.60
  • These itsy bitsy bottoms are big on style with braid at the sides to complement the snazzy braiding on this season’s swim tops.

    Our Price:
    $23.80
  • A light long-sleeve option for year-round use. The improved fit and princess seams make this crew every bit as flattering as it is comfortable.

    Our Price:
    $45.00
  • A comfortable core makes everything else feel capable of more. The PhD SmartLoft Divide vest pairs Merino lining with a wool-insulated quilted nylon shell. Wear it for maximum warmth on epic outings.

    Our Price:
    $102.00
  • Designed for the trail runner and hiker alike, the Merinomax Asymmetrical is a must have for serious trail junkies. Add in special features like flatlock seams, 97% merino wool and concealed zip pocket and you have one tremendous base/midlayer.

    Our Price:
    $68.00
  • This densely woven knit jacket offers maximum warmth with minimal bulk, keeping you warm even on the coldest days. The arm pocket gives you a smart place to stow credit cards and keys while on trail runs or day hikes.

    Our Price:
    $90.00
  • Perfect for layering or wearing alone, this lined tank features an internal bra and 4-way comfort stretch for versatility and mobility. Built in wicking properties and built-in sun protection ensure that you stay dry, comfortable and protected.

    Our Price:
    $20.00
  • Wear the Wicked Lite trail running, backpacking or urban exploring, all on the same day! Designed to pull moisture away from the body, the Wicked Lite is an essential baselayer for the woman constantly on the go.

    As Low as:
    $12.25
  • Lole's technical, yet feminine layering piece goes the distance in their four-way stretch, moisture-wicking Cool Fleece. This soft polyester/elastane blend keeps you warm, feeling dry and smelling good.

    Our Price:
    $48.00
  • A cold-weather, next-to-skin baselayer with a venting zipper, made with 100% Merino Wool; ideal for layering or wearing on its own.

    As Low as:
    $63.00
  • Patagonia's most versatile synthetic baselayer keeps you dry and warm in cool to cold conditions - with a cropped inseam to ensure snug boot fit.

    Our Price:
    $19.60
  • Patagonia's most breathable synthetic baselayer keeps you dry and comfortable in cool conditions.

    Our Price:
    $18.00
See Trekt Reviews at Bizrate.com
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