You don’t need to be naked during a float session if you don't want to, but you certainly can! Since it is a completely private experience, most people decide not to wear anything in the float tank. In fact, it is often recommended to be naked while floating in a sensory deprivation tank since it is more beneficial to have nothing pressing against your skin during the experience. Then again, if you decide to not be naked during your MindFLOATness Therapy, wearing your favorite swimsuit will do just fine.