Keep fluids colder, longer, with this perfect-sized 12 oz insulated handheld that feels great in your hand. Lightweight, grip-free, and reflective for added night-time visibility, this popular handheld is ideal for shorter to mid-distance runs. Features: 12 oz / 355 mL double-wall insulated and hi-viz reflective SpeedShot Flask with Push-Pull Blast ValveTM cap. Double-wall flask construction keeps fluids cooler 20% longer than other flasks Fully-adjustable hand strap with chafe-free thumbhole enables grip-free running Expandable zippered pocket for nutrition, keys, and running essentials   Specification: Weight: 3.42 oz / 97 g (with bottle) Storage Capacity: 8.5 cu in / 0.14 Liters