True to size for a 5'1", 105lbs, with just enough give without being too tight. XS are getting harder to find, and XS isn't what it used to be but these thermals fit great.

Perfect thickness for warmth when high altitude camping. I just use these under my kuhl free flex pants and I am perfectly comfortable in the evenings.

Soft, cozy, and warm. Just what you want from an underlayer!

Fantastic fit. Incredibly quick drying material. Used for backpacking and snow camping. It was surprising to see such thin material but they exceeded my expectations and am looking forward to seeing how they withstand the test of time and activity.

Going to Northern Finland in the winter to stand around looking at Northern Lights & needed very warm underlayer that stretches & not too thick. This, friends, is IT! Much better than competitor's Capilene that I previously used.

I love these! Warm, all-day comfort that’s easy to move in and layer. Durable too. Fits snug but not tight.

Wife liked!

Excited to try out these on the slope this month. Not only soft and comfortable, they look great too.

Love the warmth and ease of movement with my new ski thermals. Size was perfect.

Soft, warm, flattering, quick dry. Double as pajamas. I have multiple pair - a winter basic if you like to play outside.