Source ivis firefly hydration pack description the ivis firefly is the ideal partner to take on the road when all you need is water and a small pocket for essentials the pack will keep you hydrated and make sure youre seen tucked away straps and the insulated pouch for the hydration tube help you maneuver around without getting caught the ivis firefly is developed for professionals in fire fighting road construction airfield operators or mining workers and ideal for any outdoor acti