Nike Workout Gear. BREATHABILITY IN MOTION The Nike Pro HyperCool Women's 3" Training Shorts are made with stretchy, sweat-wicking fabric and mesh panels for mobility and ventilation during your workout. Nike HyperCool technology provides targeted ventilation Dri-FIT Technology helps keep you dry and comfortable Mesh side panels enhance breathability Stretch fabric for natural range of motion Elastic waistband for a snug, comfortable fit Flat seams move smoothly against your skin. 3" inseam Fabric: Body: Dri-FIT 80% polyester/20% spandex. Panels: Dri-FIT 85% polyester/15% spandex. Lining: Dri-FIT 100% polyester. Machine wash.