Here is a smart eye mask that helps you sleep better. The Dreamlight Zen is great for yoga and meditation too. It comes with Bluetooth connectivity to play soothing sounds and music. You can use the companion app to stream audiobooks and your own music to the device.
The Dreamlight is comfortable to wear and blocks 100% of light. It is powered by a 1000mAh battery that lasts up to 10 hours (music).