Just like the name says, this 2-cup holder also includes a clear dry box right in the middle of the action, giving you storage for several people’s wallets, cell phones, keys, cameras, etc. Attaches vertically only – great for the side of a console, cooler, or bait tank. Held in place by one sturdy 4.5? SeaSucker vacuum mount, which means you can put it where you need it, when you need it.