We have several water bladders for hiking and such. The one thing on them that fails is the drinking tube bite valve. So having this replacement is a great peace of mind! It is made extremely durable and works well. I put it on my water bladder and tried it out. It allows the water to come out easily and it went on easy too. If you don't need to replace it yet (you will) just put it in a small pocket of your backpack or the bladder carrier! I can think of nothing more frustrating than being out in the woods and not having the bite valve to be able to drink the water in your bladder!