Sony MDR-XD100 Stereo Headphones (Discontinued by Manufacturer) It provides a ear-conscious design for long-lasting listening comfort. It has a durable urethane leather construction. It has soft and comfortable earpads and it features 40 millimeter driver units. Ear-Conscious Design For Long-Time Comfort 40Mm Long-Stroke Drivers Provides an ear-conscious design for long-lasting listening comfort Durable urethane leather construction Soft and comfortable earpads with 40mm driver units Deep bass sound Comfortable headband for long wear