So Danca - JZ-43 Black Jazz ShoeThe So Danca JZ43 adult leather jazz shoes feature a beautiful low profile line and a neoprene insert with Lycra that enhances the arch and provides arch support. These incredibly popular slip on leather jazz shoes have a split rubber sole and a rubber heel. You can?? use them for both jazz and ballet! Ladies order same as street shoe to a half size up for comfort. Men add two sizes before following sizing recommendations.