I have just visited: Acerbis Moose MSR Thor O'Neal and all of these systems appear to be like the Camelbak system. I would guess that they are manufactured by Camelbak. I don't see where there is enough market demand for the above to make these "in house". I would guess Camelbak is the sub-contractor. Before we give ours back to Camelbak and further support Camelbak by buying one of the above. Maybe we need to consider this. The only one I've found so far, that does not appear to be made by Camelbak id the Vital system sold by Summers Racing. I WILL return mine to Camelbak, but want to make sure I don't give them any more of my money. Any thoughts guys? Bill ------------------ 97 KDX220, 86 TTR225, 99 WR400f, WR timing, throttle stop trimmed, air box lid removed, White Bros head pipe, silencer and air filter. De-octopussed. Works frame guards and Thumper Rad Guards, Scotts steering damper. Odometer and headlight removed. Moose hand and mud guards. YZ stock tank, IMS seat and number plate. Renthal Jimmy Button "highs" and Renthal Soft half waffle grips. AMA, SETRA, Happy Ramblers MXC.