Lightweight Thermal Leggings

Lightweight thermal leggings are a smart choice for anyone looking to stay comfortable and warm without adding bulk. Designed for everyday versatility, these leggings fit easily under your favorite layers, making them a go-to staple for cool weather activities or simply relaxing at home. Their classic style ensures they pair effortlessly with everything from tunics to jackets, providing lasting value and comfort wherever the day takes you.

Sort by:

Filter & Sort

504 Items

Women's L.L.Bean Simple Soft Base Layer, Pants

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

Pros: Adds extra warmth Lightweight Softness Good fit Comfortable
Women's L.L.Bean Everyday Performance 7/8 Leggings, High-Rise

A pair of high-rise, nautical navy leggings offering UPF 50+ protection and a soft, stretchy polyester blend.

Pros: High quality Flattering fit Durable Versatile Comfortable
Women's Silk Underwear, Pants

A lightweight, breathable, and warm 100% silk base layer in black, perfect for active and casual wear.

Pros: Lightness Comfort Warmth Softness Versatility
Women's Cresta Ultralight 150 Pants, High-Rise Slim-Leg

A high-rise, slim-leg base layer made of 100% merino wool, offering warmth and comfort in alloy gray.
Women's L.L.Bean Everyday Performance 7/8 Leggings, High-Rise Pocket

A pair of high-rise, moisture-wicking leggings with UPF 50+ protection and convenient side pockets.
Women's L.L.Bean Everyday Performance 7/8 Leggings, High-Rise Pocket Colorblock
Price was from: $99 now: $74.99

A pair of high-rise, colorblock leggings with UPF 50+ protection, moisture-wicking fabric, and convenient pockets.
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.

Lightweight Thermal Leggings

When it comes to staying comfortable in shifting weather or enjoying the outdoors from early morning hikes to cool summer evenings by the campfire, lightweight thermal leggings offer a practical, versatile layer for all kinds of activities. These leggings are designed for lasting comfort, crafted from soft, breathable fabrics that help regulate temperature without adding bulk. Whether you’re heading out for a sunrise paddle, setting up camp after a day on the trail, or simply enjoying a brisk walk with the dog, thermal leggings are a reliable go-to. Their easy stretch and smooth fit make them ideal for layering under shorts or pants, or even wearing on their own when you want just a bit more warmth without overheating. They’re a smart addition to any travel bag, offering a compact layer that’s ready for unpredictable weather—think cool mornings that turn warm by noon, or evenings when the temperature dips just enough to call for something extra.

Lightweight thermal leggings aren’t just for outdoor adventures—they’re also a thoughtful gift for anyone who values comfort and practicality. If you know someone who loves to spend time outside, whether they’re gardening, walking their favorite trails, or coaching a soccer game from the sidelines, a pair of thermal leggings can make those activities even more enjoyable. Kids heading off to camp, college students tackling early classes, and busy parents who want a cozy layer for chilly mornings will all appreciate the lasting value and comfort these leggings provide. Their timeless style means they’ll be worn season after season, and their durable construction stands up to frequent wear and washing. For men looking for a reliable base layer, our dedicated page for Men's Thermal Leggings offers even more options to suit different needs and activities.

Choosing the right pair of lightweight thermal leggings comes down to a few key considerations. Look for options that balance warmth and breathability, so you stay comfortable whether you’re moving or relaxing. Details like flat seams help prevent chafing during active days, and wide waistbands add to the overall comfort, especially when you’re on the move. Moisture-wicking fabrics are especially helpful for activities that might work up a sweat, keeping you dry and comfortable all day long. With the right pair, you’ll find yourself reaching for them again and again—whether you’re lounging at home, heading out for a weekend adventure, or packing for a summer getaway where the weather can turn on a dime. Lightweight thermal leggings are a simple, timeless solution for anyone who wants to make the most of every day outside, no matter what the season brings.