try having a search for it on the forum, there have been quite a few threads on this before, general consensus is that they are bloody good value for money !! I love mine.
I really liked mine. I had a gp and a dressage one. GP one went with horse when I sold him and had to sell dressage one as was too small for new horse. Real shame though as I found them to be excellent, both in comfort and durability. They also dont have that synthetic look and people regularly remarked that they didnt realise they werent actually leather!
Definitely good value for money.
I use mine with normal leather girth and stirrup leathers and it's totally unmarked inside and out despite regular use. Picked mine up for £200 second hand and use it as a spare jumping saddle/ hacking saddle. If it's raining I always use the tekna as it just wipes off hehe. Love it!