Abstract: A hydration system for providing fluid to a subject is provided, the system comprising a flexible tube for extending between a reservoir of a liquid and the mouth of the subject and having a first end for immersion in the reservoir of liquid and a second end; a holder releasably attached to a portion of the tube between the first and second ends of the tube; and a mouthpiece connected to the second end of the tube and arranged to be held in the mouth of the subject when the subject is receiving liquid from the reservoir through the tube. A holder for use in such a system is also provided.