floatation tank drawn by one glowing neon line. sensory deprivation therapy capsule continuous line drawing on black

sensory deprivation tank line neon drawing water floating illustration therapeutic stress contour spa sanatorium salt relaxing relaxation continuous reduction recreation pool weightlessness wellness glow meditation luminous isolation health floatation cure one swim capsule bathtub baths antistress therapy turquoise opened stroke float leisure healthy lifestyle black minimalist open alternative single simple