Custom Keeper Pocket Inserts are made from SuedeTex®. This special paper is what I imagine the love child of paper and leather might feel like. It takes wet media beautifully and is my favorite paper for watercoloring. However it is also tear resistant, even when soaking wet! That makes your pocket inserts easy to paint and customize if you choose yet also extremely strong and durable. You won't have to worry about tearing your pockets due to wear and tear or overstuffing.