Whether you're working up a sweat or simply looking to stay warm and comfortable, our women's classic thermal merino base layer bottom plus is up for the challenge.

Delivering exceptional performance and improved functionality, the women's smartwool classic thermal merino crew base layer top maintains your warmth and comfort as you hike, ski, bike.

— smartwool women’s classic thermal merino base layer crew — straight, plus size, and bottom.

While not the warmest.

Recommended for you

With merino sport yarns and.

Combining the benefits of merino wool with the durability and fast dry times of polyester, the men's.

Stay cozy and comfortable with smartwool's women's base layer tops.

Shop for smartwool women's base layer tops on sale, discount and clearance at rei.

It’s super comfortable and feels soft and.

Experience exceptional performance during your.

— with sculpted sides for enhanced fit, the smartwool base layer was designed specifically for women and delivers on every front.

Seemed a bit heavy, maybe, but.

Top quality, great selection and expert advice.

Most durable merino base layers:.

Top quality, great selection and expert advice you can.

Smartwool classic thermal merino base layer crew

New colors, new fit for improved style & functionality.

Weight 218 g (top), 208 g (bottom) fabric 100% merino wool.

Top quality, great selection and expert advice.

Women's classic thermal merino base layer 1/4 zip plus.

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Find a great deal on smartwool women's base layer tops.

— if you're looking for a versatile synthetic base layer available for a price that doesn't break the bank, the rei midweight base layer crew is a great choice.

Women's classic thermal merino base layer crew.

— best merino wool base layers.

Best women’s base layers at a glance.

Top quality, great selection and expert advice you can.