I have a Dakine Hydration plastic bag in a black cover which is about 10 years old. It rides on top of my regular pack. I have lost 2 essential parts and wish to replace them 1) the insulated hose covering and 2) more importantley the green and yellow bite nipple which often fell off. I know this is earlier model and does not have shut off valve. It was great because it was gravity flow and did not require sucking to get water any time. Do you have any spares. Thanks I like hip pack may get one for my wife.