wear them for one occasion, or for one day. after that you can throw them away. single use lenses tend to be very soft and thin and very comfortable to wear. single use lenses are often used by people who do not like to use contact lenses very often. they can buy 20 pairs of lenses and use them whenever they need to, and simply stock up again once they have run out.
it takes a little bit of getting used to if you have never worn contact lenses. some people have no problems at all, other people might need to use eye drops every now and then when they wear 