Features & Benefits Comfort and safety meet convenience with this new 12 oz insulated flask with Fire and Ice™ technology. Lightweight, grip-free, and reflective for added night-time visibility, this popular handheld is ideal for shorter to mid-distance runs. 12 oz / 355 mL double-wall insulated and hi-viz reflective SpeedShot Flask with Push-Pull Blast Valve™ cap.Ergo flask with a new seat-channeled, no-slip grip insert for an easier carry Integrated 3M™ reflective fabric offers 360-degree reflectivity for visibility in low-light conditionsDouble-wall flask construction keeps fluids cooler 20% longer than other flasksFully-adjustable hand strap with chafe-free thumbhole enables grip-free runningExpandable zippered pocket for nutrition, keys, and running essentialsStorage Capacity: 8.5 cu in/0.14 LitersWeight: 3.42 oz/97 g (w/ bottle)