Kelli gives us the run down on fit and performance of the HydraQuiver VP2! The VP2 vest pack utilizes a 3D spacer mesh with a transparent surface that gives a plush "floating" honeycomb appearance. It's softness makes it comfortable against the skin and breathable, while having minimal stretch. Our traditional shoulder pockets are still on the pack for quick access to your nutrition, phone and other accessory items. This pack is extremely light, extremely breathable, stable under speed yet comfortable for the long haul.