2 weekly lenses are soft contact lenses that can be worn for 2 weeks. They are worn during the day and kept in a lens jar with eyeglass fluid at night. For most lenses applies that the lenses can be worn for 1 week day and night or can be chosen for a replacement of every 2 weeks if the lenses are switched off at night. Here you can (with proven suitability of the eye) choose how you wear the lenses.
Hygienic and correct use is very important for the health of the eyes.