On Running Shorts Women's Ultralight and comfortable, the On Running Shorts are the perfect go-to pair for everyday exercise. Made from a moisture wicking fabric, these running shorts keep you dry during your activities. The wide and adjustable waistband provides a stay-put fit to limit any interruptions while you work out. Made from a four-way stretch polyamide and elastane blend for a light and fast-drying feel. Reflective logos increase visibility at night. Inner brief offers comfort and support.