● A dial on each lid allows you to set a date to remind you when your disposable lens need to be   replaced, for example: you wear biweekly disposable lens on July 2 and you set L lid to "1" and "6" for R lid, you therefore know that your lens to be replaced on July 16.
● Distinctive L and R markings on both of lids and base ensure the lenses are correctly organized.
● Soft rubber around the lids provides a smooth and slip-free grip to ensure easily opening and closing.
● Anti-slip bottom base.
● Leak-proof design features secure locking lids and base.