Abstract: Apparatus for use in sunbathing comprises a screen formed of a sheet of thermoplastic material which is transparent to the safe UV-A wavelengths of solar radiation but which contains uniformly distributed therethrough a first agent whcih absorbs at least 80% of the UV-B radiation in the 290-320 nm range and a second agent which prevents transmission therethrough of some radiations above 450 nm wavelength, i.e. visible light and infra-red. The screen may be mounted on a frame so as to shield the sunbather from the harmful wavelength of radiation, prevent unpleasant overheating and provide subdued lighting. The second agent may be an absorbing dye or pigment.