Each roll is 21 inches wide and at least 200 feet long and is perfect for tracing multiple copies of patterns with a spiked wheel or tracing off patterns with ink for permanent use and storage -- folds very flat.  It has a calendared finish which means that the surface is very polished and smooth.  It is medical paper that you find on exam tables and has been used for domestic pattern making for awhile but you had to convince the nurses to part with it and then you only got a little bit.  Enjoy!