evo.com | CamelBak Hydration Packs > The CamelBak Zephyr Pro Vest Hydration Pack delivers precisely what ultra-distance adventurers need with smartly designed hydration and nutrition storage that fuels your longest days across challenging terrain. The trekking pole quiver provides quick access exactly when you need it while staying completely out of your way when you don't, complemented by thoughtful features like dual adjustable sternum straps, secure smartphone storage, and four-point compression. N40D Ripstop with C0 DWR 15.35 x 9.45 x 5.91 in / 39 x 24 x 15 cm Secure Phone Pocket Two Quick Stow 17 oz 2.0 Flask Stowable, Removable Trekking Pole Quiver | CamelBak Zephyr Pro Vest Hydration Pack 2026 - 34oz in Blue