Designed with winter running and training in mind, the Tech Trainer Hybrid Tights combine strategically zoned technical fabrics for the ultimate cold-weather performance bottoms. The Tech Trainerâ€™s main body features midweight terry fabric that blends merino wool, nylon and LYCRAÂ® for a premium combination of warmth, stretch and durability. Zoned, air-permeable panels of PertexÂ® Quantum Air fabric feature a DWR finish and offer breathability and protection across a range of weather conditions. The contoured waist features a low-profile internal drawcord to dial in the perfect fit, and the gusseted design allows for unrestricted range of motion. Flatlock stitching prevents chafing while youâ€™re moving fast, and a zippered back stash pocket store a key, card or cash.