Convenient With Less Mess
I saw these types of flasks years ago with triathletes & figured with just running or riding I didn't need them. I have been thinking for a while about how fiddly energy gels are especially at speed on a bike & if you don't want to litter & get the sticky tabs & wrappers back into your pocket safely. I stumbled across these recently & had to try it out, simple & effective. When it got low I just closed the lid & put it in my pocket upside down. I might waste an energy gel occasionally but it's a safer & cleaner alternative.