The seat on my 2017 T120 Black was made of the finest English Oak. Terrible, wanted to walk after 20 minutes. Tried the comfort seat. Only minimally better. That took 30 minutes before the urge to walk arrived.
I bit the bullet and got a Corbin seat. I have seen comments that they are hard and uncomfortable. Mine is firm, but from the beginning, it has been night and day better. And every ride, it conforms more to me. I am very happy with it. Took about 6 weeks to get, but it was worth it. I got the Gunfighter and Lady seat, leather seat area, vinyl panels, silver piping.