If its digital print why not use a matt laminate over your normal wrapping base film ?
Check with your normal vinyl supplier if they recommend any laminate in particular, but make sure its cast and no more than 50 micron thick (prefer 25 micron but I`ve never come across a matt PVC laminate this thickness yet)
Not all vinyl manufacturers produce cast matt laminates and unfortunately board rules don`t allow me to name them
Alternatively if you know a screenprinter have your prints varnished with a matt clearcoat…..then if you use a cast base film you have no thickness issues and have a very conformable construction