Soft, fleecy interior provides warmth and insulation. Designed and patterned in the saddle for perfect fit. 4-way stretch, body contouring panels. No-chafe, overlocked, edge-stitched seams for a flattering, tailored look. Chamisoft knee patches for non-slip performance. 1.5 inch no-roll waistband for comfort. Thin gripper elastic at ankle for less bulk. U.S. Pat. D483,551 and 7,500,274. Made in the USA.