A hydration system comprising: a fluid reservoir comprising a means for reversibly mounting the hydration system to a structure； a supply tube fluidly coupled to the reservoir at its distal end； a reversibly compressible chamber fluidly coupled to the supply tube； a mouthpiece proximate to or at a proximal end of the collapsible chamber； and at least two valves that regulate the flow of fluid through the hydration system, wherein a distal valve is positioned at a distal end of the chamber or along the supply tube and closes in response to compression of the chamber to reduce backflow of fluid into the reservoir during compression, and a proximal valve is positioned at the mouth piece, biased closed for regulating the delivery of fluid out of the mouthpiece and prevents or reduces air induction into the mouthpiece.
