My first experience with Shot Blox was horrible - a Walt Disney World half marathon at night. They passed them out at mile 9 - how in the heck do you scramble to open a pack while running?!? Ended up tossing them into the trash...
Fast forward to hiking... these are great! Awesome to slide into a cargo pocket or pouch on your pack - eat a couple, move on. I wish that there was a multi flavor pack, instead of having to visit a local store for flavors - but that's just me.
These do the trick - and I prefer the caffeine laced ones. Like a gummi bear molded into a cube, they do the trick!