Deuter Streamer Z Valve Kit Hydration Pack

I bought this to replace my original bite valve which developed a hole where you bite it. This bite valve has been improved in that it:

It twists to shut off, no more annoying dripping

-The material seems to be a little thicker, maybe it won''t develop the same hole where you bite it as quickly

It comes with a little cover to keep dirt from accumlating on the bite valve, I don''t really know how well this works or if it''s worth the extra weight.

All in all this bite valve seems to be much more functional and built better but only time will tell how it holds up.