The Deeluxe TPS Shield is a special system that fits deeluxe boots to increase the boot stiffness. This can breath life into older boots or can be used to stiffen the boot up for higher speed riding. These are the medium stiffness versions so they add a couple of points to the stiffness so take a 5 mid flexing boot upto a 7 stiffness etc. They come as a pair ready to fit behind the laces. Just please check that your boots have the pockets to accept the TPS shield in the tongue. See the picture below to see where they fit.
Check your boots MP size to find the right size inserts for your boots:
Medium - MP25-27.5
Large - MP28-30.5