VEVER Portable HeadPhone Headset Earphone Case Box Pouch Bag for KOSS Porta Pro Headphones-Black Color Material: nylon Hard shell case with soft interior layer for better protection Compatible for KOSS Porta Pro PP Headphones Zip-Around closure Product Dimensions: 3.8 X 3.8 X 2.5 inches (9 X 9 X 6 cm)