Well, no doublets this time, but plenty of singlets...
The singlet did not become common in college wrestling until the late 1960s and early 1970s; in fact, it had been banned by the NCAA for years. Shirtless uniforms, including trunks and tights, were common until the NCAA banned shirtless wrestling in the mid-1960s.
A new style of singlet, known as a double or doublet, has recently emerged in college wrestling that covers more of the upper body. Made of the same Lycra material, this singlet has more of a t shirt covering than the traditional thin-strap singlet more commonly worn.
This type of singlet is usually worn with accompanying tight-fitting shorts. This style of singlet is currently only allowed on the college level, although there is report that some high school wrestlers use this singlet style in practice sessions