Is there a travel friendly contact lense case that dosnt leak?

Ive tried two different contact lense cases that come with my lenses and theyve both leaked.


One was 2 circular pots joined together with plastic with screw on lids.


The other is a inch high pot with a screw on lid, the lid is attached to a plastic cage that the contact lenses are held in.


Im going to ask my optician when i pick up my next batch but does anyone have any advice?


And also, why do cases need to be thrown away after a month of use because thats what it says in my instruction booklet.Is there a travel friendly contact lense case that dosnt leak?
The types with the screw on tops are best for travel.

pores