I agree, Salsa, when they went to the new wide-mouth bladders, the screw cap seems to tighten up WAY tighter than I know I tightened it. Sometimes I've wondered if I was ever going to get it open...The Rogue lets you just flip up a flap on the back and not remove the bladder- so if you're at a convenience store, a buddy can just top you off without you having to remove it, if you want.

Southernbelle, I don't know if you can get this as an add-on or not, but some of the CBs, like the military versions, have black insulation over the hose that keeps it cooler.