The Field Series FS150R soft yarn marimba mallets incorporate durable materials, added weight for volume, and excellent sound quality required for field percussion. The FS150R has a firm rubber core for rich, warm tones. The mallets weigh more than most series, producing more sound that's perfect on the open field. Soft 100% wool yarn wrapped on the heads provides for a superior timber. These mallets are identical to the FS150, but the FS150R features durable rattan handles.