Bloch's Super Jazz Shoe is the most popular rubber bottom jazz shoe! It has a full grain soft leather upper that will stretch and mold to the foot normally a full size. There is a single strong elastic top piece for easy changes. The lining is 100% cotton which helps the shoe breathe. The bottom is a rubber forefoot and heel.
Manufacturer guidelines suggest same size or 1 size up from street shoe. This information is merely a guideline. This does not take into account dancer preference.
For child sizes, look here. For adult sizes, look here.