Equipped with two 20oz Flasks with extended tubes so you can easily drink on the go w/out removing flasks from the front pockets, built for long runs and hiking, balances your water and holds all your essentials w/out weighing you down. Main features include lightweight designs, multiple pockets for phone/gels, bounce-free fits, and options for bladder/soft flasks, reflective prints and ergo-shaped designs, ideal for trail running or marathons. Designed for comfort and performance.