Toca's Traditional Series offers the essence of Afro-Cuban tradition in sound, design, and performance. Extremely tapered shells deliver maximum bass tones out of these congas. Traditional series also features Toca's four-bolt lug tension plate, traditional hoop fitted with extended collar, and top-grade bison skins to give this series a vintage look and sound. All these design features create the authentic Afro-Cuban look and sound, thus giving this series the name Traditional.