I wear for over 16 years rigid (hard) contact lenses and have tried many different lens solutions. Very quickly I came to the convenient "all-in-one" solutions. Of this I have tried all sorts of things, in the price category of EUR 10 to EUR 25 ... At some point I then came up with this "Eyelike rigid lens storage solution" and I must say I can not see any difference to the expensive lens solutions! This solution is the perfect solution for me! :-)