Multi-Speed Natural White Noise Machine

#1 RATED WHITE NOISE MACHINE! The Multi-Speed Natural White Noise Machine is so effective, it was named "Official Sound Conditioner" of the National Sleep Foundation. Instead of a digital recording, it has a built-in fan that creates the sound of rushing air. Choose high or low speed, then twist the cap to increase or decrease the size of the sound hole openings. By adjusting the speed and sound hole openings, you’ll customize the volume and tone to find a soothing white noise that’s ideal for you. Available in White or Black.