Hit the trails with confidence thanks to the On Running Women's Ultra Running Pants. When you're blazing a trail through all weathers, the weather-defying 2.5-layer waterproof fabric ensures you remain dry and with a smile on your face. And should the sun peak out from behind the storm clouds, the small mesh pouch at the waistband makes it super-easy to stash them away until needed again. For that Ultra run you've got planned, where weather can be unpredictable and ever-changing, they're the perfect companion.

Pull them on over your regular running shorts and you'll be thrilled at their low weight and easy-going flexibility. As you pick up the pace you'll also be happy to find they breathe well too, preventing sweat from hanging around beyond its welcome. On Running has given these running pants a motion-inspired cut, moving with you as you dart and dash over rough trails. An elastic waistband and cuffs keep the elements out while also keeping the fit comfortably secure.