SleepPhones classic breeze pitch The SleepPhonesheadphones are designed to help you fall asleep and stay asleep. The headphones reduce noise from the environment, conversations, traffic and snoring and are therefore ideal for travel, yoga and leisure. The SleepPhonesClassic is the original design with ultra-thin, patented, soft and comfortable headphones in a headband. The fabric is cool, soft and slightly elastic Specifications: Colour: black Size: large/extra large (60-63 cm) Material: 95% Polyester, 5% Spandex Frequency: 20-20kHz Cable length: 120 cm