Opti free puremoist contact solution is designed to keep your contact lenses fresh and clean whilst helping to protect your eyes from infections at the same time the hydraglyde moisture matrix surrounds your contact lenses with a cushion of moisture which will keep your lenses moist for up to 16 hours opti free puremoist contact solution suits all types of soft contact lenses it is so gentle that you wont find anything better for your sensitive eyes this 300ml pack contains a 1 month suppl