We make these boot-length bottoms for taking the line less traveled. With the micro-grid fleece interior of our Capilene® Thermal Weight, they provide the greatest warmth combined with the greatest breathability of any baselayer in our lineup. Soft, stretchy and compressible, the 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. Capilene Thermal Weight is bluesign® approved, has 92% recycled content and is treated with Polygiene® permanent odor control. Features include a flat waistband with brushed inner elastic for next-to-skin softness, a gusseted crotch for mobility, flatlock seams to minimize chafing, and a 22-inch inseam for comfort with big boots.