1. Material: Acrylic<br />2. Length: Approx 25cm / 9.8 inch<br />3. Top size (L x W): Approx 10*4cm / 3.9*1.6 inch<br />4. Bottom size (L x W): Approx 8.5*7cm / 3.3*2.7 inch<br /><br />Compatible Headphones:<br />- Bose QuietComfort QC3， QC2， QC15， AE， AE