Just got this: TOZO for iPhone XR Case 6.1 Inch (2018) Ultra-Thin Hard Cover Slim Fit [0.35mm] World's Thinnest Protect Bumper for iPhone XR [ Semi-Transparent ] Lightweight [Matte Finish Black] https://www.amazon.com/dp/B07GPBGQ99/ref=cm_sw_r_cp_api_i_.6JzCb680D9MW

It is THIN. Like a hard sheet of paper thin. I like it.