The "Intuition" liners are made of a heat moldable closed cell foam that compresses wherever pressure is exerted. Once the liner cools (approx. 10 min.) the impressions remain. These liners are very warm and comfortable and can be remolded a few times allowing them to be transfered to a new shell.
I sell them for $199.95 in the bag or $239.95 molded.
Some stock liners that come in boots have "thermo" liners which have a small layer of moldable material around the ankle area that will give a small amount of customization but is more of a marketing tool than a true customization feature.