HydraPak Ultraflask 500 ml Bivy Designed with incredibly strong Silverlite™

Designed with incredibly strong Silverlite™ cord and our innovative Microtune™ adjustment system

without cramping your style

reliable pushbutton igniter starts heating instantly

Injected TPU heel-capture system for stability

LIGHTWIRE SUSPENSION

HydraPak Ultraflask 500 ml Bivy Designed with incredibly strong Silverlite™So 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