My ten-liter Osprey Raven ($140) is more than ample: I can fit a water bottle, a first aid kit, food, layers, and a rotating cast of other supplies, depending on the terrain, weather, and time of the year
So, when it came to Arais Regent-X, their entry-level full-face lid priced under $500, I had high expectations
A stuff sack is going to be a bit more malleable and soft, whereas a dry pack may be more rigid
And sure enough, the moment I flipped it upside down, it started leaking water out of the zipper
Reels which permitted line to easily drain and dry were also favored because early fly lines were susceptible to rot
If you require a helmet with a specific, named adjustment mechanism, you might need to look at alternatives that provide this information