Daily disposable contact lenses are used for one day, then thrown away. They typically don’t involve the use of lens solutions and contact lens cases. You may want to consider daily lenses for travelling or if you simply want a more hygienic and hassle-free option.  Bi-weekly/Monthly Reusable lenses are reused for two/four weeks and require cleaning and disinfection every day. Some lenses are approved for even longer wearing periods. However, a shorter wear cycle and more frequent use of fresh lenses are more comfortable.