Agreed with both of the above posters.
Abetta makes incredible synthetic saddles. They last for a long time if cared for properly, and they are super light. I have an Abetta Crossover Saddle, and it weighs around 20lbs or so. I use it instead of my heavier barrel saddles for an easy going ride, a trail ride, or on a younger horse.
They are easier to clean, as well, which is always a good thing.
Some other good brands that make synthetic are Wintec and Big Horn.
Tango - 6 yr Sorrel Quarter Horse Gelding
Corn - 8 yr Gray Quarter Horse Gelding