[WARNING: Travel Sleep is extremely effective. DO NOT USE while driving or operating heavy machinery]
Travel Sleep is an incredibly effective sleep aid for travelers in all situations. Using the most advanced psychoacoustic sound sources, and digital signal processing, Travel Sleep triggers primal memories to induce fast and profound relaxation. The effect is immediate - you will fall quickly into a deep, relaxing sleep. Best used with headphones or external speakers.
Find out more at:
http://www.travelsleep.com