Although the Olympus Tough Neoprene acc.Manufacturer data and information on the Amazon product description makes no reference to the fit.:
It fits perfectly for the Tough TG-860th
Very soft neoprene, which is inside lightly lined. It provides good protection for the camera and has the following mounting options: belt, wrist if need be and a separate holder for the camera case with snap hook.
And in my opinion, it also looks good.
To prove the fit some photos here and full 5 points from me. I would not hesitate to take on the Tough TG-860 again, not to mention at the special price of just under 15 incl. Shipping for which I have received here.