Pretty easy to unscrew I just pop it loose and flip it fast to spin it and pull it off. I also have a straw lid that’s good if I’m just lounging around but chug lid is goat for the gym.Chug cap is wierd. Having to unscrew it every time sucks.
The hotshot cap is neat, but removes the functionality of having some kind of loop.
I ordered the straw cap to see if it's any better. Honestly, the chute cap design on the camelback bottles is pretty nifty.