No Dancing Monkey Vest System" leads to a bounce-free ride. Lightweight design with plenty of breathability keeps you feeling fast and cool. Two included flasks with straws are perfectly placed to keep you hydrated with ease, for an added 76g weight penalty. Front pole carry is easy to access and designed to stay out of your way. 3 size options allow for a better fit all around. "No Bounce Compression Compartment" maximizes fit while minimizing bounce.