Thermajane leads the way in keeping you warm every season. Our thermal underwear are ultra-soft with a fleece lining for comfort and warmth. Whether you're wearing a top, bottom, or a set, Thermajane long underwear look and feel great. We pride ourselves on using innovative technology to bring style and comfort into our thermals.


At Thermajane, comfort and style go together. Whether you're inside or adventuring outdoors, we have you covered with a fleece-lined long johns perfect for lounging or layering. With 13 colors and moisture-wicking features, we have what you need to stay comfortable and stylish.

A Perfect Fit

Long underwear should fit correctly. That is why we have designed our long johns and compression wear to fit like a second skin. You get that perfect fit that forms your body perfectly.

Stylish Design

We take the design of our thermal underwear seriously. Not only will they keep you warm, but we use flat-lock seams and a tagless design with various colors to add style and comfort.

Fabric Matter

Fabric is an essential part of our thermals and compression wear. We designed them to be practical yet full of ultimate comfort and moisture-wicking to keep you dry.

Girl's Thermal Sets

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Women's Thermals

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Boy's Thermal Sets

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Men's Thermals

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