I ordered these covers thinking that they would be a correct fit and of good quality, what a disappointment !!
The quality was no better than that of seat covers that I had fitted to My previous car, but much much cheaper.
Who ever designed the covers forgot about several things. They forgot that the lower part of the rear seat is split, and hence the lower seat cover should also be split with a zip to allow for lower seat folding. They also forgot the rear seat has three full seat belts, three point anchorage. I had to cut the seat cover, unbolt the lower anchorage point and thread the seat belt through the said "cut" in the upper rear seat cover. The fact that the rear seat has three headrests was also overlooked, no provision, or no zips were fitted to allow the headrests to be fitted. once again I had to cut the cover in six places to allow fitment. The funny thing is that You are given three headrest covers for the rear seat.
I double checked the box, and yes the seatcovers were suitable for Hyundai i30 2011 and upwards, mine is a 2015.