Stocks come in medium density and freestyle, only, [as far as I remember] and two sizes....you measure your thin area in the ``ear-to-ear`` direction and then front to back, so John will `match`the nearest size... Debbie can cut it to your template --good idea there Biltmore602.. getting your stock cut to your template-size and then the Template sent off to the factory for the custom system to be made.... John will be able to select the nearest colour in stock, to your own hair sample too...they`re pretty good..just don`t expect an exact fit to the contour of your own head..that is the whole purpose of a template sent to the factory... a system made for YOU, to fit YOUR head...some guys are lucky --the stock can be a perfect fit-- but they are good to tide you over ...my first stock was because I had a job interview coming up and couldn`t turn up in a suit wearing a baseball cap ! lol ! It did fine and lasted ages too... Paul.