The Remo Fiberskyn® 3 head is pre-tuned on a 0.25 inch thick ACOUSTICON™ shell guaranteeing years of care free play. The sturdiness and durability of this 12-inch diameter hand drum make it the ultimate travel companion, and perfect for both indoor and outdoor use. Using your hand you can create a sound that will maintain its position in any drum circle. For comfort it has a thumb notch. Although cross bracing is not necessary, if you want to add your own there are pre-drilled holes. The overall size is 12 inches in diameter and 2.5 inches high.