My backpack has a hide-away water bottle carrier built-in, at a perfect angle, complete with elastic draw-cord, so it won’t fall out. I normally use it for my bear spray, as I use a water bladder, but it also holds my SpiderBottle nice and snug, as well. The thing I don’t like about BlenderBottles is the rattly ball. SpiderBottles and Cyclone Cups have a different design to fix that issue - people should take a look at them, for their consideration.
Gregory Baltoro 75