The Typhoon is Kamen Rider U.S.A.'s #5's transformation belt which is powered by wind.
In Kamen Rider U.S.A. x Dragon Knight x Masked Rider: Rise of a Riders, Rider U.S.A. #5 gains new upgrade which upgrades his Typhoon as well. This Typhoon's belt strap is white and has a large shield covering the belt which only opens up during transformation.