These UV reactive Green UV contact lenses can be used for up to 90 days after opening. That means in those three months every party club or festival you go to, you are sure to stand out when wearing them. The green glow is seen best under UV lights & looks awesome! 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)