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

Women's Baselayers & Underwear

146 Products

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  • Thin yet effective, Columbia's midweight baselayer is perfect for skiing or cold-weather hiking.

    Our Price:
    $22.00
  • 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
  • Patagonia's most versatile synthetic baselayer keeps you dry and warm in cool to cold conditions.

    Our Price:
    $29.40
  • Smartwool's feminine-looking long-sleeve lightweight baselayer is extremely comfortable on the skin. With more opening at the neck than the Microweight Crew, the V-Neck is perfect by itself on a mild day.

    Our Price:
    $52.50
  • 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.

    Our Price:
    $85.00
  • Smartwool's Midweight Crew is essential for any cold weather event you may come up against. Casual or extreme, this crew is a must if you intend to stay warm. Made of 100% Merino wool, you're going to be extra comfy in the cold.

    Our Price:
    $95.00
  • 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:
    $105.00
  • Made from Smartwool's warmest baselayer fabric, these bottoms will keep you warm even on the coldest chairlifts. Features a covered elastic waistband, flatlock seam construction and a midrise waist to add for excellent comfort.

    Our Price:
    $95.00
  • Who says baselayers have to be boring? Hot Chillys' best selling baselayer fabric, the Micro-Elite, has moisture wicking and antimicrobial properties to help keep you comfortable throughout your adventures.

    Our Price:
    $54.00
  • 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.

    As Low as:
    $28.00
  • An instant classic, this all-purpose seamless bra supports a variety of sizes and is made with wicking recycled polyester for exceptional moisture management. Wear it for everything from trail running to climbing to day hikes.

    As Low as:
    $21.00
  • The barely Everyday Bra is sure to hold you in place when you're heading through distant lands or hitting the backcountry with friends and family. This comfortable racerback bra is made of a soft, quick-drying recycled polyester/spandex blend.

    Our Price:
    $45.00
  • 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
  • The MerinoMax full zip kicks cold weather to the curb with dense double jersey knit, pop-out hand mitts, and a draft flap. A zip-shut sleeve pocket keeps tunes at the ready.

    Our Price:
    $180.00
  • 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:
    $42.00
  • The stylish design sets this baselayer aside from all the other boring, bland colors out there. Take the Women's peach Sub Print Crewneck on your next cold ski/snowboarding trip.

    Our Price:
    $36.00
  • Patagonia's most breathable synthetic baselayer keeps you dry and comfortable in cool conditions.

    As Low as:
    $22.50
  • 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
  • The retro styling of this fixed-triangle beauty just says “Brigitte Bardot”!

    SAVE 30%

    Lole Cebu Top

    Our Price:
    $35.00
  • 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.

    As Low as:
    $50.00
  • 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:
    $52.50
  • 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:
    $119.00
  • 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.

    Our Price:
    $35.00
  • Made from Smartwool's warmest baselayer fabric, these bottoms will keep you warm in the coldest conditions. Made specifically to wear with ski boots, they also feature a covered elastic waistband, flatlock seam construction and a midrise waist.

    As Low as:
    $40.00
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