Momentum 3.0 elevates this feature with enhanced Fluidic Holsters that contour more naturally to the body, moving bottles completely out of the arm swing for better comfort and freedom of movement. A newly integrated guided rail system makes rear bottle access even more intuitive, allowing for easy re-stowing on the move.Built as a minimalist 6-liter vest, the Momentum 3.0 features upgraded UltrAcool mesh for greater breathability, and a new MaxO2 closure system that adjusts both vertically and horizontally using a simple hook design for a fully customizable fit.