Despite the name, UltrAspire's Fastpack Race Vest isn't quite a vest, but it's not quite a backpack, either. It's designed for'''surprise!'''fastpacking, where covering miles is paramount but carrying enough gear is a necessity, the Fastpack has room for sleeping gear, extra clothing, and food and water, but has all the ultrarunning DNA you'd expect from UltrAspire. That means loads of pockets, both internal and external, for everything from energy gels to salt tabs to water bottles to headlamps to a hydration reservoir, a breathable mesh body and Body Rhythm Harness, and plenty of adjustable webbing to ensure a comfortable fit. It comes with two Polarity water bottles, which are designed to be easily removed and replaced in the side sleeves. Noise free zippers mean you don't have to listen to the soundtrack of jingling metal when you're in the wilderness.