Not sure if this has been covered before, I did look and didn't find anything so here it goes...
I swear by my CamelBak 100oz bladder over the Platypus (I do use the Platypus liter containers though and they are great). The only problem I have with the CamelBak is it is a few ounces heavier then the Platypus of equal volume. Sooo…after an afternoon brainstorm I realized that the Camelback’s large plastic ring can come off…Great!
All you have to do is get a screwdriver and pull up the tab on the plastic CamelBak collar and twist and it will come right off. It may take a few times; I actually put my screwdriver in a vise so I could use both hands to twist off the plastic ring.
Now in order to still be able to hang the bladder inside the pack and also to hang it from a branch around camp, I attached a spectra cord to it via the 4 small studs that are molded into the mouth of the remaining filler cap where the large plastic ring used to be. I super glued the knots so they would stay put and there ya go!!
This will drop one solid ounce from your CamelBak bladder! If you don’t use the mouth piece adapters for a water filter quick fill, then this bladder should weigh 6oz now...very comparable to the Platypus.