Building a forward-focused kit gets a lot easier with the right accessories, and for on-the-go hydration, the Bottle Pocket takes on the task like a boss. Considering how frequently the Bottle Pocket will be stuffed and pulled on, we chose materials built to endure repeated cycles of use; durable stretch mesh, DCF50 Dyneema Composite Fabrics, 1/8th inch high-density foam, and rugged Gatekeeper hitch locks that attach to most shoulder straps with daisy chains. Refreshment, where you want it, when you need it.