SUXM For 38 / 39 Acoustic Guitar Aperture--Fits for 38 / 39 Acoustic Guitar Aperture, suitable for amateur guitarists or professional guitarists. Elastic--Soft and elastic, wont hurt the surface of guitar, not easy to break. Small/Light--Small size and light weight, convenient to store and use, easy to install and remove. Eliminate needless echo--Eliminate needless echo and enhance stage volume without disrupting placement or performance. Rubber material--Made of high quality rubber material, eco-friendly and durable for long service time. Specification: Condition: Brand New Material: Rubber Color: Black Suitable for 38 / 39 Acoustic Guitar Aperture Package Included: 1 x Guitar Sound Hole Cover Note: Please allow slight deviation for the color and measurement. Thanks for your understanding.