I’d like some input on this too for my ‘18. Was looking at those exact ones but wasn’t sure how “custom fit” they really were. Right now I have these:

FH Group Universal Fit Full Set Flat Cloth Fabric Car Seat Cover, (Gray/Black) (FH-FB050114, Fit Most Car, Truck, Suv, or Van) https://www.amazon.com/dp/B003SSLE8I/ref=cm_sw_r_cp_api_glt_fabc_Y6HVVRJ70TQM2B28VM39