With a Pump-Powered Handheld Personal Mister, one pressurizes the air and water in the mister bottle via its integrated hand pump then squeezes the trigger or presses a button to release the water through the adjustable-tip nozzle as a fine mist up to a stream. Flash-evaporation of the atomized micro-particles can reportedly have a cooling effect of as much as 30°F. Most of these misters consist of plastic bottle (some with optional neoprene-zippered cooling sleeve), brass nozzle, stainless steel pump mechanism, and carrying strap with belt/bag clip.