Performance Collection. Thermoregulator: This fabric offers optimal breathability to keep you at a stable temperature. Comfort Stretch: Stretch fabric that provides extra comfort. Slim fit. Elastic waistband with adjustable drawstring. Double-breasted and zippered front closure. Two Front Welt Pockets. The model is 6'3" and is wearing a size 42. Inside leg measurement 29.84 in. Side length 40.55 in. The Performance collection includes garments made with technical fibers. This selection offers a wide range of advanced features such as bi-stretch, quick-drying, easy ironing, thermoregulating, breathable or water-repellent fabrics, organized into three general categories: Thermoregulating, Functional and Comfort