I bought this from Amazon: https://photos.app.goo.gl/xzJ9hesgTM1AZgRd6

Amazon link: for Audio-Technica ATH-M50x ATH-M50xMG ATH-M50xRD ATH-M40x ATH-M30x ATH-M70x Professional Studio Monitor DJ Headphones Headset Hard Carrying Travel Case Bag by co2CREA https://www.amazon.com/dp/B01DLNIJX2/ref=cm_sw_r_sms_apa_i_M4k3DbJWA07W0