Usage Directions / Dosage: Wash cup and valve before first use. After cleaning, pinch valve at stem to activate. Insert valve into the holes on the inside of the lid with arrow towards drinking spout. Screw lid on tightly. Do not use valve with carbonated beverages or pulpy juices.Warnings/Caution: To avoid injury, do not let child walk or fun with cup; Do not use with any hot liquids as this may result in burning.