i360 Music Infused Polarband For 3G iPod Nano (Black, Orange) Designed for 3rd generation Apple iPod Nano video. Also compatible with Nike + iPod system. Internal wiring system + detachable speakers included. Custom thin speaker casing provides increased sound quality and bass response eliminating the dorky ear muff look. FABRIC CONTENT: 95% Polyester / 5% Polyurethane Polar Fleece.