Despite the simplicity of The Standard, it's anything but simple. The Standard has a high-density stitch count which delivers durability without bulk and a performance fit that yields no slipping, bunching or blisters. Unprecedented durability and unique ''put it on, forget it's on'' feel. Pulls moisture away from skin. Fast drying. Cool in the summer, warm in the winter. Repels bacteria and odor. The ultimate fiber for breathability and comfort in all conditions. Undetectable seam fusion for an ultra smooth, invisible feel. Material: Merino Wool, Nylon, Lycra Spandex.