Featuring 2 24oz BPA free bottles in the back, 2 mesh chest pockets, 2 mesh shoulder pockets, and a rugged shock cord in the back for jackets. 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. This pack is extremely light, extremely breathable, stable under speed yet comfortable for the long haul. The way to fit this pack is to clip the front clips, then cinch the sides nice and snug while leaving the front chest strap loose. This tension is very important as it controls the fit and the front chest strap once set won't have to be readjusted.