Hydration delivery tube with check valve

A hydration system, comprising:

• a tube comprising a first end and a second end, the first end comprising a liquid reservoir coupler and the second end comprising a bite valve,
• the liquid reservoir coupler configured to couple to and seal a liquid reservoir;
• the liquid reservoir coupler further comprising a channel therethrough to allow liquid to pass through the channel when under suction;
• a check valve interposed between the bite valve and the liquid reservoir coupler to prevent backflow into the liquid reservoir;
• wherein the bite valve and check valve are:
• i. absent actuation by a user, both in a closed position, and
• ii. independently actuatable by:
• a. a user biting the bite valve to thereby open the bite valve, and
• b. applying suction to the tube to thereby actuate and open the check valve;
• wherein when a user bites to open the bite valve and suction is applied to the tube, the check valve allows liquid to pass from the liquid reservoir to the user;
• and
• as liquid passes from the liquid reservoir, a volume of the liquid reservoir decreases from a first volume to a second volume, the second volume less than the first;
• and
• wherein when suction is stopped, the check valve closes due to vacuum pressure in the liquid reservoir which thereby prevents liquid from passing back through the tube into the liquid reservoir, the bite valve actuatable to prevent backflow from the user's mouth to the tube.