The BBH i have, have snaps and a pocket with a bamboo stuffer. They are fine for 3-4 hours.

i like the itti snap-ins better because they are easier to dry cos they come apart. I use the 2 bamboo boosters that they come with when you buy them, but you can get an extra one if you need it.

i have found the ittis to be smaller in size than BBH, so upsize if you are not sure which one to get.