Slingshot being called a 95 (story)

An adult story entitled The Hard Body's New Beginning Ch.07 features a slingshot. Chapter 1 of this authors hardbody series also features the same gold slingshot.

Norm's choice was a gold sling-style suit. She had several different
variations of this sling suit and Cori told him that the guys at the Shop
used to call them 95's.

"Why?" Norm asked.

`They figured they showed off at least 95 percent of my body," Cori
laughed.

"Well, I'd say it will be more like 98," Norm said, once again impressed
by the wardrobe assembled by his fellow Cori bangers.

The suit consisted of nothing more than a gold string about the
thickness of a typical spaghetti strap. It went over the shoulders and
across the breasts, veering together at the crotch where it joined into one
string