I read a question on the Osprey Hydraform...
I read a question on the Osprey Hydraform page that says to fill it you can fit the outlet of The Hiker Pro INSIDE of the outlet of the Hydraform I guess my main questions are do the Hiker and Hiker Pro have the same tubing diameter and does this really work?
I believe the main difference relative here from the Hiker and the Hiker Pro, is that the Pro comes with a separate connector piece that can be used on your Osprey, Nalgene, Jansport, or any other compatible bladder. I own the Pro, and have yet to use the additional adapter. I generally use the larger one pictured which pops right into the top of a 32 oz nalgene bottle. I'm almost positive the tubing is all the same diameter.
Yeah, the tubing is all 1/4" inside diameter. Get the Hiker Pro with the Quick Connect already built in and, like Eli said, it comes with this attachment already. Or you can get the Hiker version and just add a couple Quick-fill adapters separately.
Hiker Pro- watch the video
Just for general info purposes- The bottle adapter that comes with this is designed to fit a 63mm Nalgene bottle opening, and the HydraForm, even though it's made by Nalgene, is 80mm.