got one of these last time when on offer. not used the case but great price for the bladder and the bite thing at the end.
Antidote Reservoir Features:
Quick Link System, 1/4 turn - easy open/close cap, lightweight fillport, dryer arms, center baffling and low-profile design, patented Big Bite Valve, HydroGuard technology, PureFlow tube, easy-to-clean wide-mouth opening
Key Pack Features:
External fill, insulated reservoir sleeve, attachment points, carry handle / hanger loop, zippered tube access