Enjoy cold water on even the hottest days with the HydroFlask Journey Insulated Hydration Packs. This accessory keeps your water nice and cold, regardless of how hot it is outside. Available in a 10-liter and 20-liter capacity, the Journey packs use innovative design to keep the heat away. Similarly, the packs feature a HydraPak IsoBound 3-liter insulated reservoir, which offers internal insulation. Since it is dishwasher safe, you can fill it up with your favorite beverage without worrying about how to clean it. Moreover, a neoprene reservoir sleeve provides the second layer of protection. Lined with reflective material, the sleeve redirects heat away from your beverage. To top it off, a mesh panel separates the backpack from your body, creating an air pocket that keeps body heat away. Abrasion, tear and puncture resistant, the Journey Insulated Hydration Packs can keep up with your adventures.