Bottle holding system for backpacks

A bottle holding system for use by a wearer of a hiking backpack having one or more shoulder straps forwardly situated and secured to the backpack in support of a rear casing thereon having an exterior side and an interior compartment, comprising:

• an inflatable cuff member formed having a cylindrical and open-ended configuration with an open top and an open bottom in both a deflated and inflated condition, said cuff member being positioned for mounted attachment to the exterior side of the rear casing and sized to fit around a bottle of drinking fluid along the length thereof so that the bottle is retained exclusively within the cylindrical configuration of said cuff member when inflated and released therefrom through the open bottom to a hand of the wearer when deflated;
• banded means for attaching said cuff member to the exterior side of the rear casing, said banded means comprising a flexible band member assembled about said cuff member and connected to the rear casing;
• a length of tubing connected at one end thereof to said cuff member and routed from the positioned attachment of said cuff member along the interior compartment of the rear casing, said length of tubing further extending outwardly from the rear casing in proximity to the shoulder straps;
• a bulb member flexible in form and coupled to receive the other end of said length of tubing, said bulb member being mounted on a selected one of the shoulder straps;
• and
• an air release valve connected in-line between said bulb member and the other end of said length of tubing, said air release valve having a controlled actuation to cause a pressure release from said valve and a deflation of said cuff member.