The Ivan Trevino Signature Series is a collection of five marimba mallets including three marimba models on walnut-stained birch shafts and two vibraphone/marimba models on rattan. The marimba models feature cores of varying sizes tailored to each mallet for distinct sound and balance and longer shafts to facilitate playing wide intervals. These vibraphone/marimba mallets feature a high-strength synthetic cord for durability and are wound tightly to speak clearly and provide increased articulation.