Ladies Thermal Base Layers

Ladies thermal base layers are your go-to solution for staying warm and comfortable during outdoor adventures. Designed to provide an essential layer of warmth, these base layers are perfect for everything from winter hikes to chilly morning runs. With their soft fabrics and versatile styles, they offer the ideal combination of comfort and practicality. Whether you're layering up for a day on the slopes or simply enjoying a brisk walk in the park, these thermal essentials ensure you stay cozy and ready for whatever the day brings.

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476 Items

Women's PrimaLoft ThermaStretch Fleece Tights, Mid-Rise
Price was from: $110 now: $43.99

A pair of mid-rise fleece/nylon tights in fig, featuring a plush interior and moisture-wicking waistband.

Pros: Great fit Quality Warmth Softness Comfortable
Women's L.L.Bean Heavyweight Base Layer Pants

A versatile, midnight black heavyweight base layer with moisture-wicking, quick-drying, and odor-controlling properties.
Women's Silk Underwear, Pants

A lightweight, warm, and breathable pair of black silk long underwear pants for women.

Pros: Lightness Comfort Warmth Softness Versatility
Women's Silk Underwear, Turtleneck

A lightweight, black silk turtleneck providing breathable warmth without bulk, perfect for layering.

Pros: Excellent customer service Comfortable thinness Great turtleneck fit Lightweight and warm Perfect for layering
Women's Cresta Midweight 250 Pants, High-Rise Slim-Leg

A high-rise, slim-leg base layer made of 100% merino wool, perfect for versatile warmth and comfort.

Pros: Great fit High-quality fabric Non-itchy material Comfortable to wear Excellent warmth
Women's Cresta Midweight 250 Crew Top

A versatile, form-fitting merino wool base layer in carbon navy, designed to wick sweat and resist odor.

Pros: Holds its shape Perfect base layer Breathability Warmth Regulates body temperature
Women's Cresta Midweight 250 T-Zip Top

An eggplant heather midweight merino wool top that wicks sweat, resists odor, and keeps you warm.

Pros: Good quality Warmth True to size Versatile Comfortable
Women's Cresta Ultralight 150 Crew Top

An alloy gray, 100% merino wool crew top that offers lightweight warmth and a smooth, form-fitting design.

Pros: Lightweight warmth Not itchy Machine washable Versatile Comfortable
Women's L.L.Bean Simple Soft Base Layer, Crew

A lightweight, moisture-wicking black base layer crewneck made from 94% polyester and 6% spandex.

Pros: Great fit Smooth fabric Softness Dino style Material
Women's Cresta Ultralight 150 Pants, High-Rise Slim-Leg

A high-rise, slim-leg base layer made from itch-free 100% merino wool, perfect for any season.
Women's L.L.Bean Simple Soft Base Layer, Pants

A lightweight, pill-resistant base layer pant in sea salt, made from 94% polyester and 6% spandex.

Pros: Adds extra warmth Lightweight Softness Good fit Comfortable
Women's Cresta Wool Ultralight 150 Base Layer, Hoodie
Price was from: $99.95 now: $84.99

An ultralight, alloy gray Merino wool hoodie that wicks moisture, resists odors, and fits comfortably under helmets.

Pros: High-quality material Easy to care for Perfect under layer Lightweight design Comfortable fit
Women's Cresta Wool Ultralight 150 Turtleneck
Price was from: $99.95 now: $84.99

An ultralight, form-fitting turtleneck made of 100% Merino wool, in alloy gray, with thumbhole cuffs.

Pros: Cleanliness High quality Warmth Comfortable fabric Low maintenance
Women's Cresta Ultralight 150 Crew Top, Stripe

An itch-free 100% merino wool base layer, perfect for cold-weather sports, available in ocean waves and storm teal.

Pros: Ideal as long underwear Provides excellent warmth Soft merino wool material
Women's Cresta Ultralight 150 Pants, High-Rise Slim-Leg Stripe

A high-rise, slim-leg base layer made of soft, itch-free 100% merino wool in striped ocean waves or storm teal.
Women's Cresta Ultralight 150 Turtleneck, Stripe
Price was from: $99.95 now: $84.99

An itch-free 100% merino wool turtleneck that wicks moisture, resists odors, and features thumbhole cuffs.
Women's Cresta Ultralight 150 Hoodie, Stripe
Price was from: $99.95 now: $84.99

An itch-free 100% merino wool hoodie that wicks moisture, resists odors, and fits comfortably under helmets.
Women's L.L.Bean Midweight Base Layer Pants

A versatile midweight base layer with moisture-wicking, quick-dry fabric made from recycled polyester in Lavender Ice.
Women's L.L.Bean Midweight Base Layer Crew Top

A midweight, moisture-wicking base layer made from recycled polyester with anti-odor treatment and thumb holes.
Women's L.L.Bean Midweight Base Layer Crew Top, 1/4 Zip

A versatile midweight base layer with REPREVE® recycled polyester, offering warmth, moisture-wicking, and odor resistance.
Women's LLB Simple Soft Base Layer Camisole

A lightweight, pill-resistant camisole in smoky blue heather, made from moisture-wicking polyester and spandex blend.
Women's L.L.Bean Heavyweight Base Layer Hoodie

A heavyweight base layer hoodie in pinewood green, made from recycled polyester with moisture-wicking and quick-drying properties.
Women's L.L.Bean Heavyweight Base Layer Crew Top

A heavyweight, moisture-wicking base layer in pinewood green, made from recycled polyester and elastane.
Women's Silk Pointelle, Long-Sleeve Scoopneck

A weightless cream silk long-sleeve scoop neck with a feminine pointelle-knit design for added warmth.

Pros: Lightweight fabric Versatile design Beautiful color Excellent warmth Comfortable fit

Ladies Thermal Base Layers

When the air turns crisp and the days grow shorter, a dependable set of ladies thermal base layers becomes an essential part of any cool-weather wardrobe. Whether you’re heading out for a brisk morning walk, enjoying a weekend hike, or simply running errands around town, the right base layer can make all the difference in comfort and warmth. These versatile pieces are designed to be worn under everything from jeans and sweaters to ski pants and insulated jackets, providing a foundation of cozy warmth without adding bulk. Many women find that thermal base layers are just as useful for lounging at home on chilly evenings as they are for outdoor adventures. Their soft, comfortable feel and easy-care design make them a go-to choice for layering throughout the fall and winter months.

Thermal base layers are also a thoughtful gift for anyone who enjoys spending time outdoors or simply wants to stay comfortable during the colder seasons. They’re a practical present for daughters heading off to college in colder climates, friends who love to ski or snowshoe, and family members who appreciate the lasting value of quality clothing. When choosing the right base layer, consider the activities it will be used for—some styles are designed for active pursuits and wick moisture efficiently, while others focus on providing maximum warmth during periods of low activity. Fit and comfort are key, with flat seams and tagless designs helping to prevent chafing and irritation. Layering is all about versatility, and thermal base layers are made to adapt, whether you’re layering up for a day on the slopes or keeping cozy on a frosty morning walk with the dog.

Materials matter when it comes to warmth and comfort. Many base layers are crafted from blends that balance softness, durability, and stretch, while others use natural fibers like merino wool for exceptional temperature regulation and odor resistance. If you’re interested in the benefits of wool, you can explore more options on our Womens Wool Base Layers page. No matter your choice, a great thermal base layer is a timeless investment that brings comfort and confidence to every cold-weather outing. With classic styles and practical features, these essentials are designed to stand the test of time, season after season, ensuring you stay warm, dry, and ready for whatever adventures autumn and winter bring.