100% Original YAXI stPad2 Earpads - Black 1.Inner diameter made of two different materials The front is made of protein leather and the back is made of Alcantara. The sound is easy to reflect on the front protein leather and the Alcantara on the back is easy to absorb the sound.This innovative design gives the headphone a dramatically improved sense of open space, a lighter bass, and a smoother overall sound. Do check the front and back properly when wearing the earpad. 2.Angled and wide opening As for the degree of comfort around the ear, you almost have no on-ear feeling because the earpad has room in the internal space and it feels good. Specification Outer Diameter: 98mm x 79mm Inner Diameter: 57-78m x 46-59mm (Gradually increase from the bottom) Thickness: 18mm Compatible Headphone Models: SONY MDR-CD900st/7506/CD700/V6 Audio Technica ATH-MSR7 / M20X / M30X / M40X / M50X/ WS1100/ PRO5MK3 / DSR7BT / SR9 / DSR9BT JVC HA-MX100-Z/MX10-B/CLASS-S WOOD HA-SW01/SW02 ULTRASONE Signature Studio / DJ / HFI-580 SOUNDWARRIOR SW-HP10 / HP11 / HP20 Mitchell and Johnson GL2/GL1/JP1 Pioneer SE-MSST-K / HRM—6 PRO TAGO STUDIO TAKASAKI T3-01 SENNHEISER HD280 PRO MK2 YAMAHA HPH-MT8 / MT120 Beyerdynamic DJ250/80 Maxell MXH-MD5000 Meze 99C’s