Whatever you think is good and right for you. We usually recommend a comfortable shirt without buttons, zippers or sequins as well as comfortable training pants to our trial students in Berlin. For safety reasons, you should never wear hard or sharp objects on your body during your training. Piercings or earrings should be removed or taped off in case of doubt.
As an online member you get a yellow belt and after three months T-shirt. If you add some comfortable sports pants without buttons or zippers and you are already perfectly dressed.