HydraPak Ultraflask 500 ml Bivy the Ariel AG Series has

the Ariel AG Series has a pedigree like no other pack

Open platform design

keys and other valuables close to your body

LIGHTWIRE SUSPENSION

Injected TPU heel-capture system for stability

HydraPak Ultraflask 500 ml Bivy the Ariel AG Series hasSo light you might forget you brought it, the HydraPak UltraFlask 500 fits snugly in most hydration vest pockets and shrinks as you drink to minimize sloshing. Soft material conforms to any pocket, in a size that's ideal for hydration vests, belts or pack pockets Large 42mm opening lets you fill the UltraFlask easily with ice and drink mixes Cap with adjustable drink tube and removable bite valve allows easy sipping Bite valve can be mounted directly