Runners who go the distance need equipment that outperforms. An Ultrarunning Magazine top pick, the UltrAspire Spry 2.5 Hydration Pack is a minimalist vest for everything from a 10k to a 100 miler. The Spry 2.5 is equipped with Max02® Sternum, trash pockets, shock cord for greater versatility and a larger quick stash in the back for more carrying capacity. Plus, it’s compatible with UltrAspire’s 1-liter bladder. One size fits most. UltrAspire provides extraordinary products for extraordinary athletes.