Abstract: The disclosure relates to a liquid refilling system (10) having a parent device (201) and a child or portable travel device sized device (101) that can be releasably coupled to the parent device (201) to transfer liquid from the parent to the child device. The parent device has a pump (207), an actuator (217) and an actuator stroke limitation means (218) whereby the amount of liquid dispensed by the parent device (201) can be selected as a single use predetermined amount or as a child refill amount. The parent pump is in liquid communication with the parent liquid reservoir and the pump has a volume which is substantially equal to the volume of the child.