With plush padding, 329g weight and carefully calibrated clamping force, OPPO PM-1 is like a part of your body, offering extremely comfort free from burden . The ear cushions are made out of the highest quality natural latex, which is naturally hypoallergenic, retains its mechanical spring-like properties for much longer periods, and resists moisture build up from sweating. The headband and earpads are made of hand selected lambskin that provides a luxurious look and feel.