Are you looking for professional but instrument bumper? Our instrument bumper will be your good choice. Made of craftsmanship and safe materials, it has excellent durability and practicality. Simple and easy to use, can effectively muffle the sound. Features -Color:Yellow -Material:Silicone -Size:0.50X0.50X0.50cm/0.20X0.20X0.20in -The instrument bumper can be used to the sound of trombone, or any other string instrument. -The instrument bumper is professional and can provide you a wonderful instrument playing experience. -Small and compact, the instrument bumper don't need much room to place, very practical and simple. -This instrument bumper can keep the sound quality while minimizing the sound level and will not disturb others. -The use of professional and reasonable design, suitable for all kinds of musical instrument. Package list: 20 x instrument bumper