These UV reactive yellow cats eye contact lenses will react & glow yellow under UV backlighting. Perfect to stand you out from the crowd at the club or festival. The yellow iris covers your own eye colour leaving a black, cat shaped pupil that will definitely get you noticed. These lenses are not just one offs, once you open them, you can use them for up to 90 days. Please note that for hygiene reasons this product can not be returned The contacts come in their own vial, sealed & ready for use. Full instructions on use & maintenance are included in the box with the vials. We strongly suggest you read them before use. Not included are eye care solution & lense case. You can use your own if you already wear contact lenses but we would advise that you purchase the solution manufactured by Edit specifically for these eye accessories. You can buy the solution, lense case & tweezers set separately or choose to add them with this product when prompted, for a 50% discount. ADD THE EYE CARE SET WHEN PROMPTED & GET IT FOR ONLY £3.25 (NORMALLY £6.50)