The Pocket-sized eyewash bottle is designed for emergency eye care in anywhere and anytime you need it. It is small enough to keep in a pocket or purse to provide immediate eye care in the home, shop, garage, garden, or in any place. The 4 oz. (120 ml) oval polyethylene bottle has an eyecup with a tight fitting snap-on lid. It is very convenient and the instructions on how to use it are printed on the bottle.