Providing maximum speed and performance in a minimal design, the On Running Women's Running Shorts are incredibly lightweight and made from high-quality technical fabric. Featuring an outer short with a four-way stretch polyamide and elastane blend that's light, breathable and fast-drying while a secure fit inner short with antibacterial properties and silicone leg grippers keep everything in place and ensure you stay fresh. A DWR (durable water repellent) treatment works to repel rain and a perforated mesh back keeps the air flowing so you remain cool, dry and well ventilated. Finished with an integrated (zip-free) back pocket and key loop to store your essential running items and finally, reflective detailing to enhance your visibility at night. Care Instructions Machine wash 30 degrees. Tumble dry on low. Do not iron, dry clean or bleach.