for surefoot liners, you need to go to a shop, because they have a thing filled with sand, and there is a whole process to it. those heat moldable footbeds ones i have no experience with, because i get free surefoot custom liners. i do know that the heat moldable bladders for boots are great. i have the dalbello proton 8's with a custom footbed, and heat molded bladder, and they are real nice. it was also free for me, because my dad works at a shop where they have all of those machines. if you buy a boot from the shop, they should mold the bladder for free. that is if they have that kind of a bladder.