Innovative ultra-flexible zipper cord with superior strength and reliability. Completely eliminates unnecessary tangles and enjoy a super snug fit with noise-isolating tips for enhanced sound quality. Made out of PET plastic & aluminum these earbuds are not only stylish but are also environmentally-friendly. the perfect companion for your listening pleasure, without the stress of tangled wires. Enjoy Life Without Tangles Completely eliminates unnecessary tangles from the equation Ride The Sound Slide Ultra-flexible zipper cord with superior strength and reliability Zip Out The Sound Noise-isolating tips for enhanced sound quality and a super snug fit Plays Well With Others Gold plated audio jack works on iPod, iPhone & other media devices