Lifestyles SKYN condoms are one of only a handful of available brands of non-latex condoms. These polyisoprene condoms were FDA approved in November 2008 for the prevention of pregnancy as well as for sexually transmitted diseases.
In the US, the Marines are part of the Navy. The Navy is the seagoing part of the US military. They man the ships, and submarines, and fly the jets from aircraft carriers. The marines were originally soldiers specially trained for ship to ship combat back in the days of sailing ships.
The Difference between the Navy and the Navy Reserves is that Navy is Active duty. This means that naval personnel belong to, work for, and get paid by the Navy 24 hours a day. Navy Reserve personnel are civilians most of the time. They work for the navy 1 weekend a month and 2 weeks out of the year.