My 2014 EX has pre cut slits in the floor carpet. The carpet fixture (with a flat plastic clip with the twist bit on top) slots into this . The mats are laid over the twist knobs and the knobs twist lock. I have found it virtually impossible to get the clips (slotted through the floor carpet) off/ out as I find I step on them and wanted to move them back. The carpet slots are quite fair forward of the front seats (both driver and passenger) and the mat (supplied by Honda) presses hard up against the plastic foot rest in the drivers foot well. Not the best arrangement but the floor carpet is manufactured with the slots pre cut (so that's it!) and thus the floor mats leave a gap under the edges close under the seats.