This tiny (3.5 x 2.5") piece is on Art Spectrum Colourfix ATC (Artist Trading Card) paper, the smallest version of their wonderful pastel paper. It's wonderful for oil pastels, too. I have this orange chair - my all time favorite - and it's so snug on a cold evening, plus perfect for models, as well - even when they didn't realize they were going to be models. Working this small without sharpening my oil pastels forces me to be loose, which I hope will carry over to larger works. Thanks so much for stopping by!