I bolted thos two 50 Cal. amo boxes down, slicone sealed th ebolts, removed the top handles because they rattle, and they are 100% waterproof. Tried and tested! With 25 psi in the 28: Outlaw tires, they are 28 1/2" tall. With that much air, if you get in a creek or pond with over 30 inces of water, give it the gas and the front wheels will just float on top of the water and you can ride wheelies as far as you like very easily. Whlie riding these water wheelies, he ammo boxes wil be completely submerged, and my cell phone in side there stays dry. Works well for the riding we do which is pretty much very deep mud and water. The Outlaw tire is very rough on the bike but is one of the very best mud tires I have seen.