Best M Womens Base Layers in 2026

LIGHTWEIGHT – Womens Merino Base Layer Available in: Lightweight = 165 g/m², Midweight = 250 g/m². FREE MERINO WOOL HIKING SOCKS ($21 VALUE!) – Package includes Women Merino Wool Base Layer Top Lightweight 165 g/m² + Wool Socks. Cool Packaging! MAKES A GREAT GIFT!

SUPER SOFT & COMFORTABLE – 100% Superfine 18.5 Micron Merino Wool Tops for Women provide all day comfort and no itch! Designed for daily wear without rubbing, overheating, or bunching of regular cotton.

MOISTURE WICKING & ODOR RESISTANT – Merino wool base layer women lightweight natural wicking and odor-resistant properties allow it to absorb moisture better than any other fabric, keeping you dry and fresh.

Ready for Adventure: Always enjoy cold weather adventures with the Icebreaker Merino Women’s 175 Standard Merino Wool Shirt! These women’s thermals are long sleeve and feature a comfortable crew neck for year-round layering performance and style.

Amazingly Soft Women’s T-Shirts: These long sleeve tee shirts for women are made with 100% Merino Wool, an annually renewable resource that naturally resists odors, regulates body temperature in all weather conditions, and helps manage moisture.

All Day Comfort: Breathable and versatile, this women’s long sleeve tee shirt is quick-drying, with offset shoulder seams to reduce chafing, and ribbed fabric for all day comfort ; This is a slim fit long sleeve shirt for women for classic style.

MIDWEIGHT – Womens Merino Base Layer Available in: Lightweight = 165 g/m², Midweight = 250 g/m², Heavyweight = 320 g/m². FREE MERINO WOOL HIKING SOCKS ($21 VALUE!) – Package includes Merino Wool Base Layer Women Wool Leggings Midweight 250 g/m² + Merino Wool Hiking Socks. Cool Packaging! MAKES A GREAT CHRISTMAS GIFT!

SUPER SOFT & COMFORTABLE – 100% Superfine 18.5 Micron Womens Merino Wool Pants provide all day comfort and no itch! Designed for daily wear without rubbing and overheating of regular cotton.

MOISTURE WICKING & ODOR RESISTANT – Merino Womens Wool Pants natural wicking and odor-resistant properties allow it to absorb moisture better than any other fabric, keeping you dry and fresh.

QUALITY MIDWEIGHT BASELAYER: 100% Merino Wool is super soft and extremely comfortable. This three season merino wool crew neck thermal has the versatility and warmth to make this an essential part of your outdoor gear. Its moisture wicking properties means you won’t have to wash it as often so you’ll use even less water. Sizes XS to 3XL in a regular fit. Minus33 offers a great size selection. Outfitting anyone from the Hard-at-Work to the Hard-at-Play.

PERFECT TO WEAR: for any activity. Wear this top as a base layer to go skiing, snowboarding, hiking, running, ice fishing, hunting, the activities are endless! This midweight long sleeve can be worn whether it's as low as 0 degrees or as high as 60. Our crew has tagless construction so you don't have to worry about the annoyance of the unwanted itch. You can wear this long sleeve as a base layer, mid layer, or even outer layer so you can get as many uses out of it as you would like!

EXPERIENCED BRAND: Although there are many copy-cats on the market today, Minus33 has been a trusted brand since 2004. We see it all – from beautiful fall leaves, to white, snowy winters, to colorful springs and summers. We’re New Englanders, plain and simple. We’ve been hiking, camping, skiing, and everything else in between since we were kids. No amount of snow keeps us down, and we only continue to thrive in the summer.

Material: 87% merino wool, 13% nylon

Insulation Weight: lightweight (150g/m2)

Fit: slim

MIDWEIGHT 100% MERINO WOOL base layer ideal for cold weather activities

NATURAL body temperature control

NATURAL anti-odor control

Moisture-Wicking Fabric: Long johns for men feature a 100% CPT Performance polyester interior and 70/30 polyester/merino wool exterior with Silvadur Intelligent Freshness for odor control

Regular Fit: Our men’s long underwear boasts a tagless design for a smooth, ultra-comfortable fit; Front and back rise come in true sizing for accurate fit

Efficient Design: Our men's thermal underwear features convenient gussets and a comfortable non-itch waistband that maintains coverage and allows for freedom of motion during various activities

100 % MERINO WOOL | From Australia | 17.5 micron. 160 gsm. 88 NM/2 | Super soft and comfortable | Merino wool is machine washable| HANG TO DRY| Versatile and warm | Three-season crew neck Thermal | Perfect for Camping, backpacking and running | essential part of your outdoor gear |100 % MERINO WOOL | From Australia | 17.5 micron. 160 gsm. 88 NM/2 | Super soft and comfortable | Merino wool is machine washable| HANG TO DRY| Versatile and warm | Three-season crew neck Thermal | for Camping

WICK FREE | CRAFTED TO FIT: Sizes XS to L in a regular fit | Designed with Extra length from the Back | Outfitting anyone from the Hard-at-Work to the Hard-at-Play | complementing and forgiving fit |

BREATHABLE AND SUPER SOFT | Keeps you cool in summer and warm in winter | 160 gsm .88 NM/2 weight | interlock-knit Merino wool | used as a base layer | EASY CARE: Ultralight-weight long sleeve crew top shirt is machine-washable on cold setting | Best if hang dry | safe to tumble dry on low heat with like colors |

Breathable, Durable Fabric: Our thermal shirts for women feature a 100% technical fiber polyester interior with SILVADUR(tm) Intelligent Freshness technology and a 70% polyester / 30% Merino wool exterior

Relaxed Fit: Our women’s thermals feature a tagless design and flat seams for a comfortable next-to-skin feeling and enhanced freedom of motion

Efficient Design: Our tagless thermal shirt is equipped with convenient rib cuffs and a drop tail that provides coverage without restricting freedom of movement

Sustainably sourced

Superfine Merino yarn

Natural thermoregulation

PACKAGE INCLUDES: 1 – Women’s Merino Wool Thermal Underwear Leggings in Gray Heather / Small | MATERIAL: 18.5 Micron, 100% Merino wool, 250g/m2 | FIT: Next-to-Skin

SUPER SOFT: 100% all natural superfine 18.5-micron Merino wool ensures comfort all day long – no itch! COMFORTABLE & CONVENIENT: Quick-drying merino wool legging bottom features a loop for hang drying while you’re camping, hiking, hunting, working, playing sports, skiing, snowboarding, or partaking in any outdoors activity.

BREATHABLE: Keeping you cool in summer and warm in winter, MERIWOOL’s 250g/m2 weight inter-lock knit Merino wool can be used as a base layer or mid-layer, but won’t weigh you down. EASY CARE: Your women’s base layer legging pants are machine-washable on cold setting and safe to tumble dry on low heat with like colors, so they're ready when you are for your next adventure.

【Feature】- Hitting the gym? Our full-length and cropped leggings will wick away sweat as you train with zoned compression. When feeling nothing is everything. YIVISE Womens Workout Collection. From shorts and leggings to sweatpants and trousers, our women's bottoms are here for you whether you're running, training, stretching or relaxing. Max out your stride in loose-fitting shorts with pockets for storage, or focus on your yoga practice in a tighter pair that will free you from distraction.

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A unique 2-in-1 base layer with 100% merino wool exterior and 100% LIFA Stay Warm Technology interior

LIFA: LIFA is the original Helly Hansen base layer made of 100% LIFA fibers, providing warmth and insulation in cold weather. LIFA naturally pulls moisture away from skin and to the outer layer of the garment keeping you warm, dry and comfortable.

FEATURES: 2-layer construction, 100% Merino Wool exterior, 225g LIFA Merino fabric, Non-itch, Flat lock seams

Material: 53% merino wool, 45% polyester, 2% elastane

Insulation Weight: midweight

Fit: slim

【Feature】- Hitting the gym? Our full-length and cropped leggings will wick away sweat as you train with zoned compression. When feeling nothing is everything. YIVISE Womens Workout Collection. From shorts and leggings to sweatpants and trousers, our women's bottoms are here for you whether you're running, training, stretching or relaxing. Max out your stride in loose-fitting shorts with pockets for storage, or focus on your yoga practice in a tighter pair that will free you from distraction.

【Feature】- high waisted active shorts black shorts tight shorts mens jersey shorts white high waisted bell bottom jeans corduroy shorts designer shorts hot yoga pants baggy shorts high rise shorts ripped jean shorts boyfriend shortsripped denim shorts yoga pants linen shorts romper shorts jumpsuit shorts mini shorts tight yoga pants shorts knit shorts petite sweatpants black shorts walking shorts hot shorts leggings shorts white jean shorts bikini workout pants vintage shorts tactical shorts

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Comfortable: a wide comfort waistband stretches with ease to fit you perfectly. Made with 50% polyester, 35% merino wool and 15% nylon, this bi-layer ultra merino pant is the best Mother Nature has to offer for optimal performance and extra comfort

Functional: The hidden key pocket offers versatility and practicality to the design while allowing you to safeguard your belongings when on the go

Modern Style: The flattened seams, cotton gusset crotch, and 4-Way Stretch design all bring a sleek presentation to your fit

SUSTAINABLE TENCEL FIBERS and MERINO WOOL combine in this natural, lightweight base layer

NATURAL body temperature control

NATURAL odor control

Merino Wool blend / Brushed Microfiber for comfort and warmth

All flat seam construction to prevent chafing

Moisture Management moves moisture from the skin to keep you warm and dry

NORDIC PERFORMANCE: Designed in Sweden - a land blessed with 200 days of challenging conditions. Our highly functional Women's Pro Wool Extreme X Pants are built for dedicated athletes who work out with a purpose.

WARM & COMFORTABLE: This advanced tight-fitting baselayer pant is made of soft polyamide and Merino wool blend that offers excellent moisture transport while also providing just the right amount of warmth for optimal comfort on cold winter days in the cross-country ski tracks and similar locations.

MOISTURE WICKING & ODOR RESISTANT: Merino wool’s natural moisture wicking and odor-resistant properties keep you dry and fresh during cold weather workouts.

FREE MERINO WOOL HIKING SOCKS ($21 VALUE!) – Package includes Lightweight Merino Wool T Shirt Women 165 g/m² + Merino Wool Hiking Socks. MAKES A GREAT GIFT!

SUPER SOFT & COMFORTABLE – 100% Superfine LIGHTWEIGHT 17.5 micron Merino wool undershirt for women provides all day comfort and no itch! Designed for daily wear without rubbing, overheating, or bunching of regular cotton.

MOISTURE WICKING & ODOR RESISTANT – Merino Wool Tshirts natural wicking and odor-resistant properties allow them to absorb moisture better than any other fabric, keeping you dry and fresh.

【Quick Dry & Moisture Wicking】Made with advanced polymer fibers and an ultra-fine pore structure, sweeps away sweat from your body to keep you dry and comfortable during workouts and outdoor activities.

【4-Way Stretch& UV Protection】High density woven soft fabric renders 4-way stretch without balling-up, curling. It’s lightweight and air permeability with excellent protection against harmful UV rays, making it perfect for outdoor activities like hiking, running, and cycling.

【Heat Dissipation】 The heat dissipation capacity of this tee is 5 times that of wool and 13 times that of silk, gives a sense of coldness by cooling down body temperature 3-4 degrees lower than silk or cotton. Ribbed main fabric is lightweight with cooling finish, giving an cool feel against the skin.