The Ensemble Series ENS360R hard rubber keyboard mallets have a firm rubber core like the other Ensemble mallets, but are not latex covered. The firm rubber core is just right for projection in ensemble settings. These mallets would be ideal on xylophones and glockenspiels. The birch handles are super dependable; a quality found in all Innovative Percussion materials. These are identical to the ENS360 mallets, but with the added strength of rattan handles.