 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.