Remo Sound Shapes Multi Color 5-Pack Sound Shapes Circle Pack Sound Shapes are high-quality, affordable percussion instruments that are perfect for the classroom or daycare center They come in a variety of geometric shapes and cool sounds that are as vibrant as their colors The Sound Shapes Circle Pack have been tuned to be quieter than Remo's regular Sound Shapes and are great for places where sound level are a concern Sounds Shapes are easily stored, portable and stackable