●Made of high quality stretchy polyester fabric.The headphones are removeable and 100% Washable. ●Ear muff design. keep your ears warm in cold and protect your ears from wind. ●One size fit most. This hat suitable for women and men. ●8 Hours long playing time. Listen to your favorite tunes for up to 8 hours with a single charge of 2 hours via USB. ●Windproof & Thermal for outdoors.Hands free. Built-in microphone and volume control button panel that enable you to answer hands-free phone calls.