Our warmest, most breathable Capilene® baselayer is made with low-bulk Polartec® Power Grid™ fabric with Polygiene® permanent odor control and is Fair Trade Certified™ for sewing.

These warm, efficient bottoms are ready for anything. Equally at home during high-exertion alpine routes or freezing nights in a sleeping bag, the micro-grid fleece interior of our Capilene® Thermal Weight provides the greatest warmth combined with the greatest breathability of any baselayer in our lineup. Soft, stretchy and compressible, Polartec® Power Grid™ fabric has a smooth face that glides beneath layers and a brushed-fleece interior to warm your core, wick moisture and feel smooth against your skin. This fabric also has 30–92% recycled content and is treated with Polygiene® permanent odor control. Features include a brushed-elastic waistband for next-to-skin softness, gusseted crotch for mobility, functional fly and flatlock seams that minimize chafing.