The Ivan Trevino Signature Series from Innovative Percussion is a collection of five marimba mallets featuring 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 for ease of playing wide intervals. The vibraphone/marimba mallets feature a high-strength synthetic cord for durability and are wound tightly to speak clearly and for increased articulation.