A kit of parts comprising first and second screen members (201, 202), each screen member incorporating a filter comprising a layer of filter material configured to substantially prevent transmission of radiation at, respectively, first and second predetermined visible wavelength bands covering the wavelengths of first and second respective predetermined laser threats (L) whilst substantially allowing visible wavelengths outside of the respective wavelength band to be transmitted, wherein said first and second screen members (201, 202) are configured to be utilised simultaneously to afford the user (P), in use, with protection against said first and second predetermined laser threats.