Technical warm-weather running shorts, the Impulse Running Shorts provide optimal comfort in all conditions. Made from recycled woven nylon with a PFC-free DWR finish and a touch of LYCRA® for stretch, the Impulse sheds wind and light moisture, while the highly breathable internal eyelet mesh brief features icebreaker's Cool-Litefabric with corespun for durability and next-to-skin softness. The drawcord waist dials in the perfect fit, while an internal stash pocket stores small items.Silky-soft merino and TENCEL®, sourced from sustainable eucalyptus plantations, combine to create icebreaker Cool-Lite, a luxurious fabric that naturally regulates your bodys microclimate. Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics.