AcousticSheep SleepPhones Classic Sleep Headphones - Frustration-Free Packaging (Black, Extra Large) Extra Large headband fits hat sizes 7-1/2 and up (23.5 - 25 inches) Fall asleep faster, naturally, without drugs Block out ambient noise without painful earplugs Flat headphone speakers are comfortable to wear even laying down or on your side Machine-washable headband is made from recycled materials Connectivity Technology: Wired