I purchased the ones from Toyota and they fit like a glove BUT the black rubber strip down the middle gets crazy hot and fries my back on hot days. Does anyone know another manufacturer for custom covers??? The seat is odd in that there is no real separation (in the back ) between the seat-back and seat-bottom, so a traditional two part seat cover doesnt work(I got one from California Car Covers and had to send it back for that reason). The one from toyota had sort of a dowel sewn in to a piece in the cover and you tucked that in between the seatback and seat bottom to secure the cover. It worked great but the cover itself was too hot for me.
BTW...if anyone wants to buy mine, I am selling them (like new!)