You don’t need shoes or any form of fancy kit. Leggings or exercise trousers, a t-shirt or vest, just something you can move comfortably in is fine.
For Pilates equipment and HIIT, you will need to either be in bare feet or have grippy socks.
For mat classes, bare feet or socks is fine.
IF YOU HAVE ANY KIND OF CONTAGIOUS SKIN INFECTION PLEASE INFORM THE STUDIO AND KEEP THE INFECTED AREA WELL COVERED.