Best Women's Thermal Underwear Tops

Most Versatile

Our fitness expert appreciates the UV protection of this versatile, soft, midweight, and moisture-wicking base layer constructed from 100% merino wool.

Designed with interlock weaving and flatlock seams from natural and renewable elements. Crafted in a princess-cut fit for multiple sizing. Made for work or play. Provides UV protection, moisture absorption, and insulation when wet. Manufactured for reduced itch.

Women's Ultra Soft Scoop Neck

Material is not stretchable, sizing can be tricky, and multiple layers may be needed for colder days.

Best Bang for the Buck

Thermajane

Simple Yet Solid

Weightless, warm, and long-sleeve scoop neck with durable 4-way stretch that feels like a second skin.

Made from poly-spandex for durability and stretchability, with a binding seam finish for strength. Features a comfortable design that won’t itch, chafe, or bind. Crafted with moisture-wicking technology for warmth. Designed to move with you.

Merino Women's 175 Thermal

Sizes run small and colors vary from the images provided. Wash and dry with care to avoid shrinkage.

Icebreaker

Most Eco-friendly

Lightweight and warm wool crew top for layering or to wear on its own; traditional fit made for timeless longevity, this earns our fitness expert's approval.

Thermal base layer constructed from 100% merino wool for all-day wear. Features lightweight fabric and side-set seams. Designed for casual, traditional, and slim-fit comfort, with odor-blocking construction. Designed for outdoor adventures and snow sports.

Women's Softwear Stretch Long Sleeve Crew

Petite sizes run large and sleeve length runs short. Loses shape with repeated wash and wear.

Cuddl Duds

Easiest Fit

Fits smooth and low on the hip for a shape that is comfortable, warm, bulk-free, and body-hugging; ideal for layering.

Designed for year-round layers, warmth, and coverage without the bulk. Soft, comfortable, and lightweight fabric made from modal rayon and spandex for stretch and fit. Fits true to size and works with various body shapes and sizes. Cozy as a layer; won't feel bulky.

Material is thin; works better underneath clothes than on its own. Stretches out with extended wash and wear.

Under Armour

Women's Base 3.0 Crew

Trusted Brand

From our fitness expert's favorite brand, this versatile women’s all-season thermal is made with midweight fabric for moderate to low activity in various temperatures.

Constructed with a 4-way stretch for increased mobility, movement, and activities. Traps air on your skin, creating a microclimate of warmth. Supports odor control with UA Scent Control technology. Wicks sweat, dries quickly, fits well, and washes easily.