Amazon shoppers are raving about a £16.50 gadget, hailed as a 'godsend' for those who struggle to fall asleep.The unusual device, Amazon's Sleep Headphones, is earning high praise for its ability to aid sleep, even during flights - and is being hailed for saving people's marriages.This unique product combines an eye mask with a speaker, allowing users to listen to white noise, audiobooks or relaxing music without disturbing their partner or the discomfort of bulky headphones.The headphone eye mask, available in four different colours, usually retails at £21.99 but has been reduced to just £16.50 - cheaper than eBay! The Sleep Headphones boast a Bluetooth speaker that provides between 10 to 14 hours of music playback per charge, along with a super soft eye mask that effectively blocks out light. What sets this product apart is its comfort throughout the night, unlike earbuds or headphones which can cause discomfort over time.