Steve Rogers wore three different costumes in the first movie.
His first costume is the classic uniform for the USO.
The second was the USO uniform accompanied by a brown leather jacket and war pants as well as a prop helmet with the letter "A", it resembled the Ultimate uniform from the 1940's.
His third costume is a mix of his Classic and Ultimate uniforms from the comics, Rogers came up with the costume's designs, which were implemented by Howard Stark. The uniform was made from carbon polymer, it offered a medium level of resistance to bullets and knives and allowed his Shield to be hooked onto the back.
In The Avengers, Rogers wears a newly constructed super suit that has a strong resemblance to the traditional Earth 616 uniform of Captain America in the comics as well as the USO uniform featured in The First Avenger. The super suit is constructed of a nomex and kevlar fiber and offers a medium level of resistance to force impacts. The suit also allows Rogers to be much more agile and flexible in combat since it is less armored weight. The uniform was designed by Phil Coulson, a huge fan of Captain America.
The new suit in the upcoming movie is a new ‘stealth’ suit — a navy blue, utilitarian-looking suit that moves fluidly. The suit would have texture and look more real world with a Kevlar-based ballistic component that would protect Captain America but at the same time function like a military black-ops uniform. It is rumored, however, that Steve will break into the Smithsonian to steal a variation of his World War II uniform in order help the Winter Soldier get his memory back.
Captain America's Shield
A concave disk about 2.5 feet in diameter, weighing 12 pounds painted in its familiar red-white-and-blue pattern with a five-pointed star design in its center. It was constructed by Howard Stark and made from Vibranium. The Vibranium alloy can absorb kinetic energy from impacts therefore making it nigh-indestructible. The shield is also strong enough to combat magic and mystical weapons, such as Thor's hammer Mjolnir, it can also deflect Iron Man's Repulsors. The shield's shape makes it a superb throwing weapon. It can cut through the air with minimal wind resistance. It is also able to bounce off solid objects, such as walls and floors, when struck on its edge and can be ricocheted off of multiple surfaces. There are two handles on the shield and Steve Rogers can hold onto the handles in order to utilize it in an eastern style of fighting.
