Your tone starts right here.  These are our favorite flatpicks.  Period.  If you want the hard, crisp sound of a tortoise-shell pick, minus the lots of money typically associated with them, you will love these imitations.  In terms of texture, tortis™ are more flat and smooth than genuine tortis, and we can't tell the difference between the two soundwise.  This new material is a polymerized animal protein that is very close chemically to real turtle shell.  You could look at it as cultured turtle-shell.  Try a Tortis™, you won't regret it.