Kenner never made this "role playing" Boba Fett toy set, but it was considered for their "Return of the Jedi" line. This design proposal was made by Mark Boudreaux.
It would have included 1) weapons sleeve, 2) thermal rockets, 3) binders, 4) thermal detonator, 5) buckle/belt, and 6) utility storage.
This collectible was featured in "Star Wars: From Concept to Screen to Collectible," the 1992 hardcover book from Steven Sansweet, which informed this caption. They also released a paperback edition in 1999.