|This amazing set of underwater thrusters($31,000) that you wear like a pair of Iron Man's pants. A pair of six-inch electric thrusters silently propel a swimmer to speeds of up to three-and-a-half knots, and on a full charge the propulsion pants have a range of about two miles.
But if that isn't hardcore enough for you, check out the limitations on who can buy a pair, and where they can use it:
"Only available from Hammacher Schlemmer for recreational use by U.S. citizens within U.S. territorial waters, its advanced design requires purchase approval from the U.S. Department of State."
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