A great top for any season, the Smartwool Classic All-Season Merino top wicks moisture and regulates temperature, making it ideal as a fall base layer or a single layer when summer backpacking calls.

Underwear TopsBase Layer Tops

With a form-hugging fit, the Smartwool Classic All-Season Merino Lace long-sleeve tee is a great first layer for high-energy activities—like hiking, jogging or rowing crew—in cool or warm weather.

Underwear TopsBase Layer Tops

With its soft and durable merino wool blend, the men's Smartwool Classic All-Season Merino long-sleeve base layer top is game for any adventure from spring skiing to winter hiking.

Underwear TopsBase Layer Tops

Made from a lightweight jersey, the women's Smartwool Classic All-Season Merino long-sleeve base layer top is just as comfy layered under your ski jacket as it is worn alone for summer backpacking.

Underwear TopsBase Layer Tops

Game for any adventure, any time of year, the men's Smartwool Classic All-Season Merino quarter-zip base layer top is made from a lightweight jersey and built for comfort—even under your pack.

Underwear TopsBase Layer Tops

Designed to be your go-to for warm or cold weather, the women's Smartwool Classic All-Season Merino quarter-zip top features lightweight, soft merino wool with a nylon core for increased durability.

Underwear TopsBase Layer Tops

Made from their lightest-weight jersey and built for comfort, the women's Smartwool Classic All-Season Merino quarter-zip base layer top is game for any adventure, any time of year.

Underwear TopsBase Layer Tops

Made from a lightweight merino wool-blend jersey, the men's Smartwool Classic All-Season Merino T-shirt is built for year-round exploration and consistent comfort—even when wearing a pack.

Shirts ParentShirts

Made from lightweight merino wool-blend jersey fabric, the women's Smartwool Classic All-Season Merino T-shirt is built for year-round exploration and comfort.

Shirts ParentShirts

Made for year-round adventures, the women's Smartwool Classic All-Season Merino tank top delivers the thermoregulating, breathable powers of merino wool to keep you cool in summer and warm in fall.

Underwear TopsUnderwear Tank Tops

The Smartwool Classic All-Season Plant-Based Dye Merino long-sleeve base layer top's movement-friendly cut and chafe-reducing seams offer comfort, while a plant-based dye creates a one-of-a-kind look.

Shirts ParentShirts

Featuring dense cushion for adventurers who need more padding in their hiking boots or shoes, the Smartwool Classic Hike Extra Cushion crew socks help you go far and feel good.

SocksAthletic Socks

With ZQ-certified merino wool to keep things soft and recycled nylon to help reduce your environmental footprint, the men's Smartwool Classic Hike Full Cushion crew socks bring the cozy on every hike.

FootwearSocks

Is it a hike or a dance through the clouds? The kids' Smartwool Classic Hike Full Cushion Margarita Crew socks offer a zingy, fun pattern and full cushion for extra comfort and durability.

FootwearSocks