The Ultimate Direction Fastdraw 600 is a handheld water bottle ideal for running. It features an ergonomically shaped FlexForm 600ml bottle providing easy carrying and drinking. It has a chafe-free edge binding that is soft and thin and it features a nylon pocket compatible with the iPhone 7 and a stretchy mesh pocket for gels. It is made with Cool Wick Air Mesh and 100D Baby Ripstop. This bottle works great for long runs in the Eastern Sierra!