Stay comfortable in the cold. This running tight delivers extra warmth thanks to DriLayer Threshold thermal fabric that insulates and wicks away sweat. DriLayer® Threshold fabric keeps warm air in — while also wicking away sweat.A drop-in pocket at the back, plus two pockets on the legs, hold yourvaluables with minimal bounce.Stretch fabric gives this tight a semi-compressive fit. DriLayer® Threshold 85% polyester/ 15% spandex