The ultimate in warmth without the bulk, with softness and comfort!

Heat Holders® men's & women's thermal underwear is exceptionally effective with CeraCore insulating technology. A truly innovative lightweight product, Heat Holders® Ceramic Base Layers offer you warmth without the bulk--making them perfect for peak coziness at home and peak performance in the outdoors.

Made from a revolutionary ceramic-infused fabric, these thermals bake in the warmth, keeping you almost as warm as our thicker ORIGINAL™ base layers while being almost as thin as our ULTRA LITE™ base layers.

The Ceramic Base Layers have all-way stretch for full range of motion and fit. Made with flat seams for comfort and easy layering. The fabric is also brushed during the manufacturing process for softness...resulting in the ultimate thermal for warmth, softness, and comfort.