Nathan Quickstart 4L Hydration Bladder Pack Color:Vapor Blue-True Navy Outstanding features include:

Outstanding features include:

Nathan's popular low-profile Zipster training pack is back

Lightweight

No-slip grip insert for an easier carry

Two weather-resistant zipper pockets and four individual pockets total for an incredibly comfortable solution for carrying your essentials in the most unobtrusive way

Nathan Quickstart 4L Hydration Bladder Pack Color:Vapor Blue-True Navy Outstanding features include:This 1. 5 liter hydration bladder pack (w 4 L total storage capacity) provides a low profile, minimalist way to comfortably wear your water and bring along other essential items on your journey. 1. 5 L hydration bladder included Front storage for nutrition and phone, fits most large format smartphones Main back zippered pocket for extra layers and other running essentials Adjustable front and side straps for dialing in a perfect fit Soft perimeter