High quality synthetic. I usually prefer wool rugs but took a chance on this one and glad I did. Colors are actually better than picture - more intricate with a slight sheen. Rug was listed as a 4'x4' but was 4'x4.5". That half an inch resulted in my not being able to use it in a hall way as intended, but I found another room where it fits well. This is my 6th rug from Wayfair/Joss&Main/Birch Lane - will continue to purchase from the group.