Amazon.com: Kokoon Noise Cancelling Headphones with Bluetooth App for Sleep Aid Techniques and Relaxing Audio, Wireless Over Ear Headphones with Flexmould Comfort Ear Pads for Sleep, Relax and Travel (Grey) : Electronics
Review: Kokoon Sleep Headphones are a solid concept, but not for everyone | AppleInsider
These Kokoon Headphones Will Help You Relax and Sleep with Meditation