The Novopro NHH1 Headphone Holder is designed to mount onto a round or square vertical pole and provide easy access and storage for your headphones. The Novopro NHH1 weighs 2lbs and fits onto any vertical pole with a diameter between 0.2 in and 1 in. (please check the pole you are attaching to is less than 1 in diameter/across). Non-slip foam covers the resting area to protect your valuable headphones from damage and keep them in place on the holder.