The Coziest Headphones So Comfortable You Can Wear Them to Sleep! Designed to be comfortable enough to wear while you sleep, HLM makes listening to music, videos, audiobooks, podcasts, meditations more comfortable than ever before. You'll never want to take them off. HLM Features Soft and stretchy material for ultimate comfort 12+ hours of battery life on a single charge Crystal clear sound and noise isolation Connects to any Bluetooth device Built-in microphone for calls Washable (just remove the electronics first!) Perfect for Everything HLM is designed for all-night comfort while you sleep, but it's also perfect for relaxing in bed, Netflix, podcasts, audiobooks, music, meditations, white noise, exercise, yoga, and more! Happiness Guaranteed! Our #1 goal here at HLM is your happiness. That means we stand by our product 100%, no matter what. If you have a problem, we will solve it. Refund it. Whatever it takes. We guarantee you’ll love HLM or we'll give you your money back.