Patent ID: 8540122

Claim:
A hydration system, comprising: first and second opposing flexible walls forming a bladder having a single sealable compartment defining an interior volume, wherein the single compartment is configured to contain both a liquid and a pressurizing gas together within the interior volume, a drinking tube having a first end with a valve and a second end; a first port configured to receive pressurizing gas into the compartment; a second port configured to provide fluid communication between the compartment and the drinking tube; a third port through which the liquid can be supplied into the compartment, wherein the interior volume of the single compartment is configured to fluidly communicate with each of the first, second and third ports; and a first baffle and a second baffle connecting the first and second opposing walls within the compartment, the first and second baffles configured to oppose expansion of the bladder as the pressurizing gases are introduced into the compartment, wherein a space between the first and second baffles is accessible via the third port, the space being configured to receive and secure a thermal pack such that the thermal pack can be inserted and removed via the third port; wherein, when sealed and pressurized, activation of the valve unseals the compartment and allows the liquid to be expelled from the compartment via the second port and the drinking tube as a result of a pressurization of the compartment by the pressurizing gas.