hey man i use camelbacks 2ltr, use it for moto riding too come in handy if your doing long down winders! cost about 110 can buy them from anaconda adventure store or moto shops.. or their website..
Had a bladder in my old bump n jump impact vest until an out of control (unintentional) kiteloop had it ripped right outta there! Was very hand to have on downwinders for sure.
G'day fellaz. Anaconda has them for $19 at the moment. you need to join there adventure club then get the discount. check out there latest catalogue on there website. (page 7 i think) www.anacondastores.com
I got one from Harris Scarfe for $25. 1.5L it's great. You can also put your phone in a dinger and stuff that in there too. the ultimate downwinder pack.