Momentum 3.0 Vest carries your hydration essentials from fast training runs to long race days. The streamlined vest uses UltrAcool mesh for increased breathability and comfort. MaxO2 closure system tunes fit that move naturally with your body. Dual sternum straps help fine-tune stability when the trails go off the path. A Fluidic Holster System contours the vest closer to the body. Rear bottles move away from where your arms swing for more range of movement. A guided rail system makes the included UltraFlask 550 Hybrid bottles easy to remove and stow. The front bottle pockets also feature elastic tops with shock cords. A variety of storage pockets around the vest feature enough storage for all your go-to run gear.